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2024-10-25ata: libata-scsi: Refactor ata_scsiop_maint_in()Damien Le Moal
Move the check for MI_REPORT_SUPPORTED_OPERATION_CODES from ata_scsi_simulate() into ata_scsiop_maint_in() to simplify ata_scsi_simulate() code. Furthermore, since an rbuff fill actor function returning a non-zero value causes no data to be returned for the command, directly return an error (return 1) for invalid command formt after setting the invalid field in cdb error. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Link: https://lore.kernel.org/r/20241022024537.251905-4-dlemoal@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org>
2024-10-25ata: libata-scsi: Refactor ata_scsiop_read_cap()Damien Le Moal
Move the check for the scsi command service action being SAI_READ_CAPACITY_16 from ata_scsi_simulate() into ata_scsiop_read_cap() to simplify ata_scsi_simulate() for processing capacity reading commands (READ_CAPACITY and SERVICE_ACTION_IN_16). Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Link: https://lore.kernel.org/r/20241022024537.251905-3-dlemoal@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org>
2024-10-25ata: libata-scsi: Refactor ata_scsi_simulate()Damien Le Moal
Factor out the code handling the INQUIRY command in ata_scsi_simulate() using the function ata_scsi_rbuf_fill() with the new actor ata_scsiop_inquiry(). This new actor function calls the existing actors to handle the standard inquiry as well as extended inquiry (VPD page access). Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Link: https://lore.kernel.org/r/20241022024537.251905-2-dlemoal@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org>
2024-10-25power: sequencing: qcom-wcn: improve support for wcn6855Bartosz Golaszewski
WCN6855 (also known as QCA6490) is similar to the already supported QCA6390 but takes in two more supplies so add a new vregs list for it. On sm8450-hdk it also requires a short assert of the xo-clk pin so add handling for it in a dedicated unit. As we now have a separate set of targets for this variant, store the pointer to the targets struct associated with a model in the device match data. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20241018-sc8280xp-pwrseq-v6-2-8da8310d9564@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-10-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni
Cross-merge networking fixes after downstream PR. No conflicts and no adjacent changes. Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-10-25Merge tag 'drm-xe-fixes-2024-10-24-1' of ↵Dave Airlie
https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes Driver Changes: - Increase invalidation timeout to avoid errors in some hosts (Shuicheng) - Flush worker on timeout (Badal) - Better handling for force wake failure (Shuicheng) - Improve argument check on user fence creation (Nirmoy) - Don't restart parallel queues multiple times on GT reset (Nirmoy) Signed-off-by: Dave Airlie <airlied@redhat.com> From: Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/trlkoiewtc4x2cyhsxmj3atayyq4zwto4iryea5pvya2ymc3yp@fdx5nhwmiyem
2024-10-25wifi: rtw89: unlock on error path in rtw89_ops_unassign_vif_chanctx()Dan Carpenter
We need to call mutex_unlock() on this error path. Fixes: aad0394e7a02 ("wifi: rtw89: tweak driver architecture for impending MLO support") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Zong-Zhe Yang <kevin_yang@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/8683a712-ffc2-466b-8382-0b264719f8ef@stanley.mountain
2024-10-25wifi: rtw89: Fix TX fail with A2DP after scanningPo-Hao Huang
There might be some racing between BT and WiFi after scan. Since one of the TX related register will be modified by both FW and rtw89_set_channel() in driver, which could cause Tx fail. Reorder the calling sequence to only notify coexistence mechanism after rtw89_set_channel() is called, so that there are no concurrent operations. Fixes: 5f499ce69b8d ("wifi: rtw89: pause/proceed MCC for ROC and HW scan") Signed-off-by: Po-Hao Huang <phhuang@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241021063219.22613-1-pkshih@realtek.com
2024-10-25wifi: rtw89: coex: Set Wi-Fi/Bluetooth priority for Wi-Fi scan caseChing-Te Ku
The priority table should be changed according to what the in using Bluetooth application is. To avoid Bluetooth audio + HID (mouse) will trigger the lag experience, update the priority table. Signed-off-by: Ching-Te Ku <ku920601@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241019063131.9462-1-pkshih@realtek.com
2024-10-25wifi: rtw89: fix -Wenum-compare-conditional warningsArnd Bergmann
This is one of three drivers that trigger -Wenum-compare-conditional warnings with clang: drivers/net/wireless/realtek/rtw89/core.c:1806:14: error: conditional expression between different enumeration types ('enum nl80211_eht_gi' and 'enum nl80211_he_gi') [-Werror,-Wenum-compare-conditional] 1806 | return eht ? NL80211_RATE_INFO_EHT_GI_0_8 : | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1807 | NL80211_RATE_INFO_HE_GI_0_8; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/realtek/rtw89/core.c:1810:14: error: conditional expression between different enumeration types ('enum nl80211_eht_gi' and 'enum nl80211_he_gi') [-Werror,-Wenum-compare-conditional] 1810 | return eht ? NL80211_RATE_INFO_EHT_GI_1_6 : | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1811 | NL80211_RATE_INFO_HE_GI_1_6; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/realtek/rtw89/core.c:1813:14: error: conditional expression between different enumeration types ('enum nl80211_eht_gi' and 'enum nl80211_he_gi') [-Werror,-Wenum-compare-conditional] 1813 | return eht ? NL80211_RATE_INFO_EHT_GI_3_2 : | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1814 | NL80211_RATE_INFO_HE_GI_3_2; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/realtek/rtw89/core.c:1818:15: error: conditional expression between different enumeration types ('enum nl80211_eht_gi' and 'enum nl80211_he_gi') [-Werror,-Wenum-compare-conditional] 1818 | return eht ? NL80211_RATE_INFO_EHT_GI_3_2 : | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1819 | NL80211_RATE_INFO_HE_GI_3_2; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ In this case, all four warnings can be easily avoided by splitting the function into two separate ones, in a way that helps readability as well, at the expense of a few extra source lines. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241018152311.4023979-1-arnd@kernel.org
2024-10-25wifi: rtlwifi: use MODULE_FIRMWARE() to declare used firmwarePing-Ke Shih
Some used firmware are missing to be added to MODULE_FIRMWARE(). Add them accordingly. Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241018055651.21166-1-pkshih@realtek.com
2024-10-25wifi: rtw88: Refactor looping in rtw_phy_store_tx_power_by_rateMohammed Anees
The previous implementation included an unnecessary else condition paired with a continue statement. Since a check is already performed to determine if the band is either 2G or 5G, the else condition will never be triggered. We can remove this check. Signed-off-by: Mohammed Anees <pvmohammedanees2003@gmail.com> Acked-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241017080638.13074-1-pvmohammedanees2003@gmail.com
2024-10-25wifi: rtw89: regd: block 6 GHz if marked as N/A in regd mapZong-Zhe Yang
If 6 GHz of a country is marked as N/A in our regd map, we block 6 GHz channels now. Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241016134457.9375-1-pkshih@realtek.com
2024-10-24Input: edt-ft5x06 - fix regmap leak when probe failsDmitry Torokhov
The driver neglects to free the instance of I2C regmap constructed at the beginning of the edt_ft5x06_ts_probe() method when probe fails. Additionally edt_ft5x06_ts_remove() is freeing the regmap too early, before the rest of the device resources that are managed by devm are released. Fix this by installing a custom devm action that will ensure that the regmap is released at the right time during normal teardown as well as in case of probe failure. Note that devm_regmap_init_i2c() could not be used because the driver may replace the original regmap with a regmap specific for M06 devices in the middle of the probe, and using devm_regmap_init_i2c() would result in releasing the M06 regmap too early. Reported-by: Li Zetao <lizetao1@huawei.com> Fixes: 9dfd9708ffba ("Input: edt-ft5x06 - convert to use regmap API") Cc: stable@vger.kernel.org Reviewed-by: Oliver Graute <oliver.graute@kococonnector.com> Link: https://lore.kernel.org/r/ZxL6rIlVlgsAu-Jv@google.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2024-10-25wifi: rtw89: pci: add quirks by PCI subsystem ID for thermal protectionPing-Ke Shih
Specific PCI subsystem ID (SSID) of WiFi cards is used by specific customer who want to enable various features with different arguments. Define PCI SSID quirks tables to enable thermal protection with two kinds of thermal values for 110 and 120 degree Celsius. Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241016133735.7571-3-pkshih@realtek.com
2024-10-25wifi: rtw89: add thermal protectionPing-Ke Shih
To prevent chip overheating, reduce TX duty as the mechanism of thermal protection. When temperature is raising over a threshold, send a firmware command to reduce TX duty. If temperature is still raising, higher level is adopted to have lower active duration. The equation and unit of thermal values are different from chip to chip, so define constant thresholds of thermal value to corresponding absolute temperature of 110 and 120 degree Celsius. Latter patch will decide which thermal threshold is adopted, and current is still not enable thermal protection. For debugging, add a flag to disable_dm that thermal protection can be disabled to clarify low throughput in field. Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20241016133735.7571-2-pkshih@realtek.com
2024-10-25Merge tag 'drm-misc-fixes-2024-10-24' of ↵Dave Airlie
https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes Short summary of fixes pull: bridge: - aux: Fix assignment of OF node - tc358767: Add missing of_node_put() in error path Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20241024124921.GA20475@localhost.localdomain
2024-10-25spi: Replace deprecated PCI functionsPhilipp Stanner
pcim_iomap_table() and pcim_request_regions() have been deprecated in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"). Replace these functions with pcim_iomap_region(). Signed-off-by: Philipp Stanner <pstanner@redhat.com> Link: https://patch.msgid.link/20241024140426.157444-2-pstanner@redhat.com Signed-off-by: Mark Brown <broonie@kernel.org>
2024-10-24Merge tag 'net-6.12-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from netfiler, xfrm and bluetooth. Oddly this includes a fix for a posix clock regression; in our previous PR we included a change there as a pre-requisite for networking one. That fix proved to be buggy and requires the follow-up included here. Thomas suggested we should send it, given we sent the buggy patch. Current release - regressions: - posix-clock: Fix unbalanced locking in pc_clock_settime() - netfilter: fix typo causing some targets not to load on IPv6 Current release - new code bugs: - xfrm: policy: remove last remnants of pernet inexact list Previous releases - regressions: - core: fix races in netdev_tx_sent_queue()/dev_watchdog() - bluetooth: fix UAF on sco_sock_timeout - eth: hv_netvsc: fix VF namespace also in synthetic NIC NETDEV_REGISTER event - eth: usbnet: fix name regression - eth: be2net: fix potential memory leak in be_xmit() - eth: plip: fix transmit path breakage Previous releases - always broken: - sched: deny mismatched skip_sw/skip_hw flags for actions created by classifiers - netfilter: bpf: must hold reference on net namespace - eth: virtio_net: fix integer overflow in stats - eth: bnxt_en: replace ptp_lock with irqsave variant - eth: octeon_ep: add SKB allocation failures handling in __octep_oq_process_rx() Misc: - MAINTAINERS: add Simon as an official reviewer" * tag 'net-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (40 commits) net: dsa: mv88e6xxx: support 4000ps cycle counter period net: dsa: mv88e6xxx: read cycle counter period from hardware net: dsa: mv88e6xxx: group cycle counter coefficients net: usb: qmi_wwan: add Fibocom FG132 0x0112 composition hv_netvsc: Fix VF namespace also in synthetic NIC NETDEV_REGISTER event net: dsa: microchip: disable EEE for KSZ879x/KSZ877x/KSZ876x Bluetooth: ISO: Fix UAF on iso_sock_timeout Bluetooth: SCO: Fix UAF on sco_sock_timeout Bluetooth: hci_core: Disable works on hci_unregister_dev posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime() r8169: avoid unsolicited interrupts net: sched: use RCU read-side critical section in taprio_dump() net: sched: fix use-after-free in taprio_change() net/sched: act_api: deny mismatched skip_sw/skip_hw flags for actions created by classifiers net: usb: usbnet: fix name regression mlxsw: spectrum_router: fix xa_store() error checking virtio_net: fix integer overflow in stats net: fix races in netdev_tx_sent_queue()/dev_watchdog() net: wwan: fix global oob in wwan_rtnl_policy netfilter: xtables: fix typo causing some targets not to load on IPv6 ...
2024-10-24Merge tag 'hid-for-linus-20241024' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID fixes from Jiri Kosina: "Device-specific functionality quirks for Thinkpad X1 Gen3, Logitech Bolt and some Goodix touchpads (Bartłomiej Maryńczak, Hans de Goede and Kenneth Albanowski)" * tag 'hid-for-linus-20241024' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: lenovo: Add support for Thinkpad X1 Tablet Gen 3 keyboard HID: multitouch: Add quirk for Logitech Bolt receiver w/ Casa touchpad HID: i2c-hid: Delayed i2c resume wakeup for 0x0d42 Goodix touchpad
2024-10-25Merge tag 'drm-intel-fixes-2024-10-24' of ↵Dave Airlie
https://gitlab.freedesktop.org/drm/i915/kernel into drm-fixes - Fix DRM_I915_GVT_KVMGT dependencies in Kconfig Signed-off-by: Dave Airlie <airlied@redhat.com> From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ZxniUlDg59RxOO-6@jlahtine-mobl.ger.corp.intel.com
2024-10-24media: xilinx-tpg: use new of_graph functionsKuninori Morimoto
Now we can use new port related functions for port parsing. Use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Link: https://lore.kernel.org/r/87a5eub5s8.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24fbdev: omapfb: use new of_graph functionsKuninori Morimoto
Now we can use new port related functions for port parsing. Use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Helge Deller <deller@gmx.de> Link: https://lore.kernel.org/r/87bjzab5sd.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24gpu: drm: omapdrm: use new of_graph functionsKuninori Morimoto
Now we can use new port related functions for port parsing. Use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Acked-by: Helge Deller <deller@gmx.de> Link: https://lore.kernel.org/r/87cyjqb5sh.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24of: property: use new of_graph functionsKuninori Morimoto
Current of_graph_get_next_endpoint() can be replaced by using new of_graph_get_next_port(). Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87iktib5t0.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24of: property: add of_graph_get_next_port_endpoint()Kuninori Morimoto
We already have of_graph_get_next_endpoint(), but it is not intuitive to use in some case. (X) node { (Y) ports { (P0) port@0 { endpoint { remote-endpoint = ...; };}; (P10) port@1 { endpoint { remote-endpoint = ...; }; (P11) endpoint { remote-endpoint = ...; };}; (P2) port@2 { endpoint { remote-endpoint = ...; };}; }; }; For example, if I want to handle port@1's 2 endpoints (= P10, P11), I want to use like below P10 = of_graph_get_next_endpoint(port1, NULL); P11 = of_graph_get_next_endpoint(port1, P10); But 1st one will be error, because of_graph_get_next_endpoint() requested 1st parameter is "node" (X) or "ports" (Y), not but "port". Below works well, but it will get P0 P0 = of_graph_get_next_endpoint(node, NULL); P0 = of_graph_get_next_endpoint(ports, NULL); In other words, we can't handle P10/P11 directly via of_graph_get_next_endpoint(). There is another non intuitive behavior on of_graph_get_next_endpoint(). In case of if I could get P10 pointer for some way, and if I want to handle port@1 things by loop, I would like use it like below /* * "ep" is now P10, and handle port1 things here, * but we don't know how many endpoints port1 have. * * Because "ep" is non NULL now, we can use port1 * as of_graph_get_next_endpoint(port1, xxx) */ do { /* do something for port1 specific things here */ } while (ep = of_graph_get_next_endpoint(port1, ep)) But it also not worked as I expected. I expect it will be P10 -> P11 -> NULL, but it will be P10 -> P11 -> P2, because of_graph_get_next_endpoint() will fetch "endpoint" beyond the "port". It is not useful for generic driver. To handle endpoint more intuitive, create of_graph_get_next_port_endpoint() of_graph_get_next_port_endpoint(port1, NULL); // P10 of_graph_get_next_port_endpoint(port1, P10); // P11 of_graph_get_next_port_endpoint(port1, P11); // NULL Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87jzdyb5t5.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24of: property: add of_graph_get_next_port()Kuninori Morimoto
We have endpoint base functions - of_graph_get_next_endpoint() - of_graph_get_endpoint_count() - for_each_endpoint_of_node() Here, for_each_endpoint_of_node() loop finds each endpoints ports { port@0 { (1) endpoint {...}; }; port@1 { (2) endpoint {...}; }; ... }; In above case, it finds endpoint as (1) -> (2) -> ... Basically, user/driver knows which port is used for what, but not in all cases. For example on flexible/generic driver case, how many ports are used is not fixed. For example Sound Generic Card driver which is very flexible/generic and used from many venders can't know how many ports are used, and used for what, because it depends on each vender SoC and/or its used board. And more, the port can have multi endpoints. For example Generic Sound Card case, it supports many type of connection between CPU / Codec, and some of them uses multi endpoint in one port. see below. ports { (A) port@0 { (1) endpoint@0 {...}; (2) endpoint@1 {...}; }; (B) port@1 { (3) endpoint {...}; }; ... }; Generic Sound Card want to handle each connection via "port" base instead of "endpoint" base. But, it is very difficult to handle each "port" via existing for_each_endpoint_of_node(). Because getting each "port" via of_get_parent() from each "endpoint" doesn't work. For example in above case, both (1) (2) endpoint has same "port" (= A). Add "port" base functions. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87ldyeb5t9.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24cxl/core: Return error when cxl_endpoint_gather_bandwidth() handles a ↵Li Zhijian
non-PCI device The function cxl_endpoint_gather_bandwidth() invokes pci_bus_read/write_XXX(), however, not all CXL devices are presently implemented via PCI. It is recognized that the cxl_test has realized a CXL device using a platform device. Calling pci_bus_read/write_XXX() in cxl_test will cause kernel panic: platform cxl_host_bridge.3: host supports CXL (restricted) Oops: general protection fault, probably for non-canonical address 0x3ef17856fcae4fbd: 0000 [#1] PREEMPT SMP PTI Call Trace: <TASK> ? __die_body.cold+0x19/0x27 ? die_addr+0x38/0x60 ? exc_general_protection+0x1f5/0x4b0 ? asm_exc_general_protection+0x22/0x30 ? pci_bus_read_config_word+0x1c/0x60 pcie_capability_read_word+0x93/0xb0 pcie_link_speed_mbps+0x18/0x50 cxl_pci_get_bandwidth+0x18/0x60 [cxl_core] cxl_endpoint_gather_bandwidth.constprop.0+0xf4/0x230 [cxl_core] ? xas_store+0x54/0x660 ? preempt_count_add+0x69/0xa0 ? _raw_spin_lock+0x13/0x40 ? __kmalloc_cache_noprof+0xe7/0x270 cxl_region_shared_upstream_bandwidth_update+0x9c/0x790 [cxl_core] cxl_region_attach+0x520/0x7e0 [cxl_core] store_targetN+0xf2/0x120 [cxl_core] kernfs_fop_write_iter+0x13a/0x1f0 vfs_write+0x23b/0x410 ksys_write+0x53/0xd0 do_syscall_64+0x62/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e And Ying also reported a KASAN error with similar calltrace. Reported-by: Huang, Ying <ying.huang@intel.com> Closes: http://lore.kernel.org/87y12w9vp5.fsf@yhuang6-desk2.ccr.corp.intel.com Fixes: a5ab0de0ebaa ("cxl: Calculate region bandwidth of targets with shared upstream link") Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Huang, Ying <ying.huang@intel.com> Link: https://patch.msgid.link/20241022030054.258942-1-lizhijian@fujitsu.com Signed-off-by: Ira Weiny <ira.weiny@intel.com>
2024-10-24gpiolib: fix a NULL-pointer dereference when setting directionBartosz Golaszewski
For optional GPIOs we may pass NULL to gpiod_direction_(input|output)(). With the call to the notifier chain added by commit 07c61d4da43f ("gpiolib: notify user-space about in-kernel line state changes") we will now dereference a NULL pointer in this case. The reason for that is the fact that the expansion of the VALIDATE_DESC() macro (which returns 0 for NULL descriptors) was moved into the nonotify variants of the direction setters. Move them back to the top-level interfaces as the nonotify ones are only ever called from inside the GPIO core and are always passed valid GPIO descriptors. This way we'll never call the line_state notifier chain with non-valid descs. Fixes: 07c61d4da43f ("gpiolib: notify user-space about in-kernel line state changes") Reported-by: Mark Brown <broonie@kernel.org> Closes: https://lore.kernel.org/all/d6601a31-7685-4b21-9271-1b76116cc483@sirena.org.uk/ Tested-by: Klara Modin <klarasmodin@gmail.com> Tested-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20241024133834.47395-1-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-10-24soc: qcom: pmic_glink: Handle GLINK intent allocation rejectionsBjorn Andersson
Some versions of the pmic_glink firmware does not allow dynamic GLINK intent allocations, attempting to send a message before the firmware has allocated its receive buffers and announced these intent allocations will fail. When this happens something like this showns up in the log: pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to send altmode request: 0x10 (-125) pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to request altmode notifications: -125 ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: failed to send UCSI read request: -125 qcom_battmgr.pmic_glink_power_supply pmic_glink.power-supply.0: failed to request power notifications GLINK has been updated to distinguish between the cases where the remote is going down (-ECANCELED) and the intent allocation being rejected (-EAGAIN). Retry the send until intent buffers becomes available, or an actual error occur. To avoid infinitely waiting for the firmware in the event that this misbehaves and no intents arrive, an arbitrary 5 second timeout is used. This patch was developed with input from Chris Lew. Reported-by: Johan Hovold <johan@kernel.org> Closes: https://lore.kernel.org/all/Zqet8iInnDhnxkT9@hovoldconsulting.com/#t Cc: stable@vger.kernel.org # rpmsg: glink: Handle rejected intent request better Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver") Tested-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com> Reviewed-by: Chris Lew <quic_clew@quicinc.com> Link: https://lore.kernel.org/r/20241023-pmic-glink-ecancelled-v2-2-ebc268129407@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2024-10-24rpmsg: glink: Handle rejected intent request betterBjorn Andersson
GLINK operates using pre-allocated buffers, aka intents, where incoming messages are aggregated before being passed up the stack. In the case that no suitable intents have been announced by the receiver, the sender can request an intent to be allocated. The initial implementation of the response to such request dealt with two outcomes; granted allocations, and all other cases being considered -ECANCELLED (likely from "cancelling the operation as the remote is going down"). But on some channels intent allocation is not supported, instead the remote will pre-allocate and announce a fixed number of intents for the sender to use. If for such channels an rpmsg_send() is being invoked before any channels have been announced, an intent request will be issued and as this comes back rejected the call fails with -ECANCELED. Given that this is reported in the same way as the remote being shut down, there's no way for the client to differentiate the two cases. In line with the original GLINK design, change the return value to -EAGAIN for the case where the remote rejects an intent allocation request. It's tempting to handle this case in the GLINK core, as we expect intents to show up in this case. But there's no way to distinguish between this case and a rejection for a too big allocation, nor is it possible to predict if a currently used (and seemingly suitable) intent will be returned for reuse or not. As such, returning the error to the client and allow it to react seems to be the only sensible solution. In addition to this, commit 'c05dfce0b89e ("rpmsg: glink: Wait for intent, not just request ack")' changed the logic such that the code always wait for an intent request response and an intent. This works out in most cases, but in the event that an intent request is rejected and no further intent arrives (e.g. client asks for a too big intent), the code will stall for 10 seconds and then return -ETIMEDOUT; instead of a more suitable error. This change also resulted in intent requests racing with the shutdown of the remote would be exposed to this same problem, unless some intent happens to arrive. A patch for this was developed and posted by Sarannya S [1], and has been incorporated here. To summarize, the intent request can end in 4 ways: - Timeout, no response arrived => return -ETIMEDOUT - Abort TX, the edge is going away => return -ECANCELLED - Intent request was rejected => return -EAGAIN - Intent request was accepted, and an intent arrived => return 0 This patch was developed with input from Sarannya S, Deepak Kumar Singh, and Chris Lew. [1] https://lore.kernel.org/all/20240925072328.1163183-1-quic_deesin@quicinc.com/ Fixes: c05dfce0b89e ("rpmsg: glink: Wait for intent, not just request ack") Cc: stable@vger.kernel.org Tested-by: Johan Hovold <johan+linaro@kernel.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com> Reviewed-by: Chris Lew <quic_clew@quicinc.com> Link: https://lore.kernel.org/r/20241023-pmic-glink-ecancelled-v2-1-ebc268129407@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2024-10-24iio: dac: Kconfig: Fix build error for ltc2664Jinjie Ruan
If REGMAP_SPI is n and LTC2664 is y, the following build error occurs: riscv64-unknown-linux-gnu-ld: drivers/iio/dac/ltc2664.o: in function `ltc2664_probe': ltc2664.c:(.text+0x714): undefined reference to `__devm_regmap_init_spi' Select REGMAP_SPI instead of REGMAP for LTC2664 to fix it. Fixes: 4cc2fc445d2e ("iio: dac: ltc2664: Add driver for LTC2664 and LTC2672") Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com> Link: https://patch.msgid.link/20241024015553.1111253-1-ruanjinjie@huawei.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-10-24drm/xe: Don't restart parallel queues multiple times on GT resetNirmoy Das
In case of parallel submissions multiple GuC id will point to the same exec queue and on GT reset such exec queues will get restarted multiple times which is not desirable. v2: don't use exec_queue_enabled() which could race, do the same for xe_guc_submit_stop (Matt B) Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2295 Cc: Jonathan Cavitt <jonathan.cavitt@intel.com> Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Tejas Upadhyay <tejas.upadhyay@intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241022103555.731557-1-nirmoy.das@intel.com Signed-off-by: Nirmoy Das <nirmoy.das@intel.com> (cherry picked from commit c8b0acd6d8745fd7e6450f5acc38f0227bd253b3) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-10-24drm/xe/ufence: Prefetch ufence addr to catch bogus addressNirmoy Das
access_ok() only checks for addr overflow so also try to read the addr to catch invalid addr sent from userspace. Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1630 Cc: Francois Dugast <francois.dugast@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241016082304.66009-2-nirmoy.das@intel.com Signed-off-by: Nirmoy Das <nirmoy.das@intel.com> (cherry picked from commit 9408c4508483ffc60811e910a93d6425b8e63928) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-10-24drm/xe: Handle unreliable MMIO reads during forcewakeShuicheng Lin
In some cases, when the driver attempts to read an MMIO register, the hardware may return 0xFFFFFFFF. The current force wake path code treats this as a valid response, as it only checks the BIT. However, 0xFFFFFFFF should be considered an invalid value, indicating a potential issue. To address this, we should add a log entry to highlight this condition and return failure. The force wake failure log level is changed from notice to err to match the failure return value. v2 (Matt Brost): - set ret value (-EIO) to kick the error to upper layers v3 (Rodrigo): - add commit message for the log level promotion from notice to err v4: - update reviewed info Suggested-by: Alex Zuo <alex.zuo@intel.com> Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Acked-by: Badal Nilawar <badal.nilawar@intel.com> Cc: Anshuman Gupta <anshuman.gupta@intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241017221547.1564029-1-shuicheng.lin@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> (cherry picked from commit a9fbeabe7226a3bf90f82d0e28a02c18e3c67447) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-10-24drm/xe/guc/ct: Flush g2h worker in case of g2h response timeoutBadal Nilawar
In case if g2h worker doesn't get opportunity to within specified timeout delay then flush the g2h worker explicitly. v2: - Describe change in the comment and add TODO (Matt B/John H) - Add xe_gt_warn on fence done after G2H flush (John H) v3: - Updated the comment with root cause - Clean up xe_gt_warn message (John H) Closes: https://gitlab.freedesktop.org/drm/xe/kernel/issues/1620 Closes: https://gitlab.freedesktop.org/drm/xe/kernel/issues/2902 Signed-off-by: Badal Nilawar <badal.nilawar@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: John Harrison <John.C.Harrison@Intel.com> Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Acked-by: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Matthew Brost <matthew.brost@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241017111410.2553784-2-badal.nilawar@intel.com (cherry picked from commit e5152723380404acb8175e0777b1cea57f319a01) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-10-24drm/xe: Enlarge the invalidation timeout from 150 to 500Shuicheng Lin
There are error messages like below that are occurring during stress testing: "[ 31.004009] xe 0000:03:00.0: [drm] ERROR GT0: Global invalidation timeout". Previously it was hitting this 3 out of 1000 executions of warm reboot. After raising it to 500, 1000 warm reboot executions passed and it didn't fail. Due to the way xe_mmio_wait32() is implemented, the timeout is able to expire early when the register matches the expected value due to the wait increments starting small. So, the larger timeout value should have no effect during normal use cases. v2 (Jonathan): - rework the commit message v3 (Lucas): - add conclusive message for the fail rate and test case v4: - add suggested-by Suggested-by: Jia Yao <jia.yao@intel.com> Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Nirmoy Das <nirmoy.das@intel.com> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Tested-by: Zongyao Bai <zongyao.bai@intel.com> Reviewed-by: Nirmoy Das <nirmoy.das@intel.com> Signed-off-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241015161207.1373401-1-shuicheng.lin@intel.com (cherry picked from commit 2eb460ab9f4bc5b575f52568d17936da0af681d8) [ Fix conflict with gt->mmio ] Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-10-24iio: adc: ad7124: fix division by zero in ad7124_set_channel_odr()Zicheng Qu
In the ad7124_write_raw() function, parameter val can potentially be zero. This may lead to a division by zero when DIV_ROUND_CLOSEST() is called within ad7124_set_channel_odr(). The ad7124_write_raw() function is invoked through the sequence: iio_write_channel_raw() -> iio_write_channel_attribute() -> iio_channel_write(), with no checks in place to ensure val is non-zero. Cc: stable@vger.kernel.org Fixes: 7b8d045e497a ("iio: adc: ad7124: allow more than 8 channels") Signed-off-by: Zicheng Qu <quzicheng@huawei.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20241022134330.574601-1-quzicheng@huawei.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-10-24staging: iio: frequency: ad9832: fix division by zero in ad9832_calc_freqreg()Zicheng Qu
In the ad9832_write_frequency() function, clk_get_rate() might return 0. This can lead to a division by zero when calling ad9832_calc_freqreg(). The check if (fout > (clk_get_rate(st->mclk) / 2)) does not protect against the case when fout is 0. The ad9832_write_frequency() function is called from ad9832_write(), and fout is derived from a text buffer, which can contain any value. Link: https://lore.kernel.org/all/2024100904-CVE-2024-47663-9bdc@gregkh/ Fixes: ea707584bac1 ("Staging: IIO: DDS: AD9832 / AD9835 driver") Cc: stable@vger.kernel.org Signed-off-by: Zicheng Qu <quzicheng@huawei.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://patch.msgid.link/20241022134354.574614-1-quzicheng@huawei.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-10-24iio: adc: ad7380: fix supplies for ad7380-4Julien Stephan
ad7380-4 is the only device in the family that does not have an internal reference. It uses "refin" as a required external reference. All other devices in the family use "refio"" as an optional external reference. Fixes: 737413da8704 ("iio: adc: ad7380: add support for ad738x-4 4 channels variants") Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Julien Stephan <jstephan@baylibre.com> Link: https://patch.msgid.link/20241022-ad7380-fix-supplies-v3-4-f0cefe1b7fa6@baylibre.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-10-24iio: adc: ad7380: add missing suppliesJulien Stephan
vcc and vlogic are required but are not retrieved and enabled in the probe. Add them. In order to prepare support for additional parts requiring different supplies, add vcc and vlogic to the platform specific structures Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Julien Stephan <jstephan@baylibre.com> Link: https://patch.msgid.link/20241022-ad7380-fix-supplies-v3-3-f0cefe1b7fa6@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-10-24iio: adc: ad7380: use devm_regulator_get_enable_read_voltage()Julien Stephan
Use devm_regulator_get_enable_read_voltage() to simplify the code. Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Julien Stephan <jstephan@baylibre.com> Link: https://patch.msgid.link/20241022-ad7380-fix-supplies-v3-2-f0cefe1b7fa6@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-10-24iio: light: veml6030: fix microlux value calculationJavier Carrasco
The raw value conversion to obtain a measurement in lux as INT_PLUS_MICRO does not calculate the decimal part properly to display it as micro (in this case microlux). It only calculates the module to obtain the decimal part from a resolution that is 10000 times the provided in the datasheet (0.5376 lux/cnt for the veml6030). The resulting value must still be multiplied by 100 to make it micro. This bug was introduced with the original implementation of the driver. Only the illuminance channel is fixed becuase the scale is non sensical for the intensity channels anyway. Cc: stable@vger.kernel.org Fixes: 7b779f573c48 ("iio: light: add driver for veml6030 ambient light sensor") Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://patch.msgid.link/20241016-veml6030-fix-processed-micro-v1-1-4a5644796437@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-10-24drm/tegra: Fix NULL vs IS_ERR() check in probe()Dan Carpenter
The iommu_paging_domain_alloc() function doesn't return NULL pointers, it returns error pointers. Update the check to match. Fixes: 45c690aea8ee ("drm/tegra: Use iommu_paging_domain_alloc()") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/ba31cf3a-af3d-4ff1-87a8-f05aaf8c780b@stanley.mountain
2024-10-24Revert "firmware: tegra: bpmp: Use scoped device node handling to simplify ↵Krzysztof Kozlowski
error paths" This reverts commit 8812b8689ee6 ("firmware: tegra: bpmp: Use scoped device node handling to simplify error paths") because it was silently modified by committer during commit process, by moving declaration of 'struct device_node *np' above the initializer/constructor. Such code was not intention of the author, is not conforming to cleanup.h code style and decreases the code readability. I did not write such code and I did not agree to put my name with such commit. Original patch: https://lore.kernel.org/all/20240816135722.105945-2-krzysztof.kozlowski@linaro.org/ Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> [treding@nvidia.com: shorten subject line] Signed-off-by: Thierry Reding <treding@nvidia.com>
2024-10-24ACPI: EC: make EC support compile-time conditionalArnd Bergmann
The embedded controller code is mainly used on x86 laptops and cannot work without PC style I/O port access. Make this a user-visible configuration option that is default enabled on x86 but otherwise disabled, and that can never be enabled unless CONFIG_HAS_IOPORT is also available. The empty stubs in internal.h help ignore the EC code in configurations that don't support it. In order to see those stubs, the sbshc code also has to include this header and drop duplicate declarations. All the direct callers of ec_read/ec_write already had an x86 dependency and now also need to depend on APCI_EC. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://patch.msgid.link/20241011061948.3211423-1-arnd@kernel.org [ rjw: Subject edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-10-24ACPI: pfr_telemetry: remove redundant error check on retColin Ian King
The variable ret is initialized to zero and a littler later in the PFRT_LOG_IOC_GET_INFO case of a switch statement is being checked for negative error value. Since ret has not been re-assigned since the initialization ret can never be less than zero so the check is redundant and can be removed. Remove it. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://patch.msgid.link/20241014130522.1986428-1-colin.i.king@gmail.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-10-24cpufreq: CPPC: fix perf_to_khz/khz_to_perf conversion exceptionliwei
When the nominal_freq recorded by the kernel is equal to the lowest_freq, and the frequency adjustment operation is triggered externally, there is a logic error in cppc_perf_to_khz()/cppc_khz_to_perf(), resulting in perf and khz conversion errors. Fix this by adding a branch processing logic when nominal_freq is equal to lowest_freq. Fixes: ec1c7ad47664 ("cpufreq: CPPC: Fix performance/frequency conversion") Signed-off-by: liwei <liwei728@huawei.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://patch.msgid.link/20241024022952.2627694-1-liwei728@huawei.com [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-10-24ACPI: PRM: Clean up guid type in struct prm_handler_infoDan Carpenter
Clang 19 prints a warning when we pass &th->guid to efi_pa_va_lookup(): drivers/acpi/prmt.c:156:29: error: passing 1-byte aligned argument to 4-byte aligned parameter 1 of 'efi_pa_va_lookup' may result in an unaligned pointer access [-Werror,-Walign-mismatch] 156 | (void *)efi_pa_va_lookup(&th->guid, handler_info->handler_address); | ^ The problem is that efi_pa_va_lookup() takes a efi_guid_t and &th->guid is a regular guid_t. The difference between the two types is the alignment. efi_guid_t is a typedef. typedef guid_t efi_guid_t __aligned(__alignof__(u32)); It's possible that this a bug in Clang 19. Even though the alignment of &th->guid is not explicitly specified, it will still end up being aligned at 4 or 8 bytes. Anyway, as Ard points out, it's cleaner to change guid to efi_guid_t type and that also makes the warning go away. Fixes: 088984c8d54c ("ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context") Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> Suggested-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Tested-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/3777d71b-9e19-45f4-be4e-17bf4fa7a834@stanley.mountain [ rjw: Subject edit ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-10-24thermal: gov_power_allocator: Granted power set to max when nobody request powerZhengShaobo
When total_req_power is 0, divvy_up_power() will set granted_power to 0, and cdev will be limited to the lowest performance. If our polling delay is set to 200ms, it means that cdev cannot perform better within 200ms even if cdev has a sudden load. This will affect the performance of cdev and is not as expected. For this reason, if nobody requests power, then set the granted power to the max_power. Signed-off-by: ZhengShaobo <zhengshaobo1@xiaomi.com> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://patch.msgid.link/20241021121138.422-1-zhengshaobo1@xiaomi.com [ rjw: Fixed up tags ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>