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2018-01-22scsi: qla2xxx: Add XCB counters to debugfsAnil Gurumurthy
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-22scsi: qla2xxx: Fix queue ID for async abort with MultiqueueDarren Trapp
[mkp: sparse warning] Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-22Input: auo-pixcir-ts - delete an unnecessary return statementMarkus Elfring
The script "checkpatch.pl" pointed information out like the following: WARNING: void function return statements are not generally useful Thus remove such a statement in the affected function. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: auo-pixcir-ts - remove custom log for a failed memory allocationMarkus Elfring
Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: da9052_tsi - remove unused mutexMarcus Folkesson
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: synaptics-rmi4 - log when we create a guest serio portDmitry Torokhov
To ease analyzing boot behavior from logs, let's log when we are about to register the pass-through serio port. Also, let's drop "Synaptics" prefix from the port name, as RMI4 is good enough indicator already, and having the prefix means that the name does not fit into serio->name field. While at it move from hard-coded seio->phys to one mentioning the sensor ID (such as "rmi4-00.fn03/serio0"). Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: synaptics-rmi4 - unmask F03 interrupts when port is openedDmitry Torokhov
Currently we register the pass-through serio port when we probe the F03 RMI function, and then, in sensor configure phase, we unmask interrupts. Unfortunately this is too late, as other drivers are free probe devices attached to the serio port as soon as it is probed. Because interrupts are masked, the IO times out, which may result in not being able to detect trackpoints on the pass-through port. To fix the issue we implement open() and close() methods for the pass-through serio port and unmask interrupts from there. We also move creation of the pass-through port form probe to configure stage, as RMI driver does not enable transport interrupt until all functions are probed (we should change this, but this is a separate topic). We also try to clear the pending data before unmasking interrupts, because some devices like to spam the system with multiple 0xaa 0x00 announcements, which may interfere with us trying to query ID of the device. Fixes: c5e8848fc98e ("Input: synaptics-rmi4 - add support for F03") Cc: stable@vger.kernel.org Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: synaptics-rmi4 - do not delete interrupt memory too earlyDmitry Torokhov
We want to free memory reserved for interrupt mask handling only after we free functions, as function drivers might want to mask interrupts. This is needed for the followup patch to the F03 that would implement unmasking and masking interrupts from the serio pass-through port open() and close() methods. Cc: stable@vger.kernel.org Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: ad7877 - use managed resource allocationsAndi Shyti
Use managed resource allocations to simplify error handling during probing failure and module exiting. With this all the goto labels in the probe function together with the cleanups in the remove function are unnecessary, therefore removed. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: stmfts,s6sy671 - add SPDX identifierAndi Shyti
Replace the original license statement with the SPDX identifier. Update also the copyright owner adding myself as co-owner of the copyright. Signed-off-by: Andi Shyti <andi.shyti@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: trackpoint - only expose supported controls for Elan, ALPS and NXPDmitry Torokhov
The newer trackpoints from ALPS, Elan and NXP implement a very limited subset of extended commands and controls that the original trackpoints implemented, so we should not be exposing not working controls in sysfs. The newer trackpoints also do not implement "Power On Reset" or "Read Extended Button Status", so we should not be using these commands during initialization. While we are at it, let's change "unsigned char" to u8 for byte data or bool for booleans and use better suited error codes instead of -1. Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: trackpoint - force 3 buttons if 0 button is reportedAaron Ma
Lenovo introduced trackpoint compatible sticks with minimum PS/2 commands. They supposed to reply with 0x02, 0x03, or 0x04 in response to the "Read Extended ID" command, so we would know not to try certain extended commands. Unfortunately even some trackpoints reporting the original IBM version (0x01 firmware 0x0e) now respond with incorrect data to the "Get Extended Buttons" command: thinkpad_acpi: ThinkPad BIOS R0DET87W (1.87 ), EC unknown thinkpad_acpi: Lenovo ThinkPad E470, model 20H1004SGE psmouse serio2: trackpoint: IBM TrackPoint firmware: 0x0e, buttons: 0/0 Since there are no trackpoints without buttons, let's assume the trackpoint has 3 buttons when we get 0 response to the extended buttons query. Signed-off-by: Aaron Ma <aaron.ma@canonical.com> Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=196253 Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22soc: fsl: guts: Add a NULL check for devm_kasprintf()Fabio Estevam
devm_kasprintf() may fail, so we should better add a NULL check and propagate an error on failure. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Acked-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-01-22tun: avoid calling xdp_rxq_info_unreg() twiceCong Wang
Similarly to tx ring, xdp_rxq_info is only registered when !tfile->detached, so we need to avoid calling xdp_rxq_info_unreg() twice too. The helper tun_cleanup_tx_ring() already checks for this properly, so it is correct to put xdp_rxq_info_unreg() just inside there. Reported-by: syzbot+1c788d7ce0f0888f1d7f@syzkaller.appspotmail.com Fixes: 8565d26bcb2f ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net") Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22nfp: bpf: use extack support to improve debuggingQuentin Monnet
Use the recently added extack support for eBPF offload in the driver. Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22nfp: bpf: plumb extack into functions related to XDP offloadQuentin Monnet
Pass a pointer to an extack object to nfp_app_xdp_offload() in order to prepare for extack usage in the nfp driver. Next step will be to forward this extack pointer to nfp_net_bpf_offload(), once this function is able to use it for printing error messages. Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22hv_netvsc: Use the num_online_cpus() for channel limitHaiyang Zhang
Since we no longer localize channel/CPU affiliation within one NUMA node, num_online_cpus() is used as the number of channel cap, instead of the number of processors in a NUMA node. This patch allows a bigger range for tuning the number of channels. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22be2net: restore properly promisc mode after queues reconfigurationIvan Vecera
The commit 622190669403 ("be2net: Request RSS capability of Rx interface depending on number of Rx rings") modified be_update_queues() so the IFACE (HW representation of the netdevice) is destroyed and then re-created. This causes a regression because potential promiscuous mode is not restored properly during be_open() because the driver thinks that the HW has promiscuous mode already enabled. Note that Lancer is not affected by this bug because RX-filter flags are disabled during be_close() for this chipset. Cc: Sathya Perla <sathya.perla@broadcom.com> Cc: Ajit Khaparde <ajit.khaparde@broadcom.com> Cc: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Cc: Somnath Kotur <somnath.kotur@broadcom.com> Fixes: 622190669403 ("be2net: Request RSS capability of Rx interface depending on number of Rx rings") Signed-off-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: hns3: converting spaces into tabs to avoid checkpatch.pl warningSalil Mehta
Spaces were mistakenly used instead of tabs in some of the code related to reset functionality, which caused checkpatch.pl errors. These were missed earlier so fixing them now. Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22cxgb3: assign port id to net_device->dev_portArjun Vynipadath
T3 devices have different ports on same PCI function, so using dev_port to identify ports. Signed-off-by: Arjun Vynipadath <arjun@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: stmmac: Fix reception of Broadcom switches tagsFlorian Fainelli
Broadcom tags inserted by Broadcom switches put a 4 byte header after the MAC SA and before the EtherType, which may look like some sort of 0 length LLC/SNAP packet (tcpdump and wireshark do think that way). With ACS enabled in stmmac the packets were truncated to 8 bytes on reception, whereas clearing this bit allowed normal reception to occur. In order to make that possible, we need to pass a net_device argument to the different core_init() functions and we are dependent on the Broadcom tagger padding packets correctly (which it now does). To be as little invasive as possible, this is only done for gmac1000 when the network device is DSA-enabled (netdev_uses_dsa() returns true). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: hns3: add net status led support for fiber portJian Shen
Check the net status per second, include port speed, total rx/tx packets and link status. Updating the led status for fiber port. Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: hns3: add ethtool -p support for fiber portJian Shen
Add led location support for fiber port. The led will keep blinking when locating. Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: hns3: add manager table initialization for hardwareFuyun Liang
The manager table is empty by default. If it is not initialized, the management pkgs like LLDP will be dropped by hardware. Default entries need to be added to manager table. Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: hns3: add support for get_regsFuyun Liang
This patch adds get_regs support for ethtool cmd. Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22ibmvnic: Allocate and request vpd in init_resourcesJohn Allen
In reset events in which our memory allocations need to be reallocated, VPD data is being freed, but never reallocated. This can cause issues if we later attempt to access that memory or reset and attempt to free the memory. This patch moves the allocation of the VPD data to init_resources so that it will be symmetrically freed during release resources. Signed-off-by: John Allen <jallen@linux.vnet.ibm.com> Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22ibmvnic: Revert to previous mtu when unsupported value requestedJohn Allen
If we request an unsupported mtu value, the vnic server will suggest a different value. Currently we take the suggested value without question and login with that value. However, the behavior doesn't seem completely sane as attempting to change the mtu to some specific value will change the mtu to some completely different value most of the time. This patch fixes the issue by logging in with the previously used mtu value and printing an error message saying that the given mtu is unsupported. Signed-off-by: John Allen <jallen@linux.vnet.ibm.com> Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22ibmvnic: Modify buffer size and number of queues on failoverJohn Allen
Using newer backing devices can cause the required padding at the end of buffer as well as the number of queues to change after a failover. Since we currently assume that these values never change, after a failover to a backing device with different capabilities, we can get errors from the vnic server, attempt to free long term buffers that are no longer there, or not free long term buffers that should be freed. This patch resolves the issue by checking whether any of these values change, and if so perform the necessary re-allocations. Signed-off-by: John Allen <jallen@linux.vnet.ibm.com> Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22macsec: restore uAPI after addition of GCM-AES-256Sabrina Dubroca
Commit ccfdec908922 ("macsec: Add support for GCM-AES-256 cipher suite") changed a few values in the uapi headers for MACsec. Because of existing userspace implementations, we need to preserve the value of MACSEC_DEFAULT_CIPHER_ID. Not doing that resulted in wpa_supplicant segfaults when a secure channel was created using the default cipher. Thus, swap MACSEC_DEFAULT_CIPHER_{ID,ALT} back to their original values. Changing the maximum length of the MACSEC_SA_ATTR_KEY attribute is unnecessary, as the previous value (MACSEC_MAX_KEY_LEN, which was 128B) is large enough to carry 32-bytes keys. This patch reverts MACSEC_MAX_KEY_LEN to 128B and restores the old length check on MACSEC_SA_ATTR_KEY. Fixes: ccfdec908922 ("macsec: Add support for GCM-AES-256 cipher suite") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: hns: Fix for variable may be used uninitialized warningsHuazhong Tan
When !CONFIG_REGMAP hns throws compiler warnings since dsaf_read_syscon ignores the return result from regmap_read, which allows val to be uninitialized. Fixes: 86897c960b49 ("net: hns: add syscon operation for dsaf") Reported-by: Jason Gunthorpe <jgg@ziepe.ca> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: fec: add necessary defines to work on ARM64Lucas Stach
The i.MX8 is a ARMv8 based SoC, that uses the same FEC IP as the earlier, ARMv7 based, i.MX SoCs. Allow the driver to work on ARM64. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22usbnet: silence an unnecessary warningOliver Neukum
That a kevent could not be scheduled is not an error. Such handlers must be able to deal with multiple events anyway. As the successful scheduling of a work is a debug event, make the failure debug priority, too. V2: coding style Signed-off-by: Oliver Neukum <oneukum@suse.com> Reported-by: Cristian Caravena <caravena@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22cxgb4: fix endianness for vlan value in cxgb4_tc_flowerKumar Sanghvi
Don't change endianness when assigning vlan value in cxgb4_tc_flower code when processing flow match parameters. The value gets converted to network order as part of filtering code in set_filter_wr. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22cxgb4: set filter type to 1 for ETH_P_IPV6Kumar Sanghvi
For ethtype_key = ETH_P_IPV6, set filter type as 1 in cxgb4_tc_flower code when processing flow match parameters. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22virtio_net: Add ethtool statsToshiaki Makita
The main purpose of this patch is adding a way of checking per-queue stats. It's useful to debug performance problems on multiqueue environment. $ ethtool -S ens10 NIC statistics: rx_queue_0_packets: 2090408 rx_queue_0_bytes: 3164825094 rx_queue_1_packets: 2082531 rx_queue_1_bytes: 3152932314 tx_queue_0_packets: 2770841 tx_queue_0_bytes: 4194955474 tx_queue_1_packets: 3084697 tx_queue_1_bytes: 4670196372 This change converts existing per-cpu stats structure into per-queue one. This should not impact on performance since each queue counter is not updated concurrently by multiple cpus. Performance numbers: - Guest has 2 vcpus and 2 queues - Guest runs netserver - Host runs 100-flow super_netperf Before After Diff UDP_STREAM 18byte 86.22 87.00 +0.90% UDP_STREAM 1472byte 4055.27 4042.18 -0.32% TCP_STREAM 16956.32 16890.63 -0.39% UDP_RR 178667.11 185862.70 +4.03% TCP_RR 128473.04 124985.81 -2.71% Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22Input: xpad - add support for PDP Xbox One controllersMark Furneaux
Adds support for the current lineup of Xbox One controllers from PDP (Performance Designed Products). These controllers are very picky with their initialization sequence and require an additional 2 packets before they send any input reports. Signed-off-by: Mark Furneaux <mark@furneaux.ca> Reviewed-by: Cameron Gutman <aicommander@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22Input: stmfts,s6sy671 - add SPDX identifierAndi Shyti
Replace the original license statement with the SPDX identifier. Update also the copyright owner adding myself as co-owner of the copyright. Signed-off-by: Andi Shyti <andi.shyti@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-22RDMA/cma: Update RoCE multicast routines to use net namespaceParav Pandit
rdma_dev_addr contains the net namespace pointer, while referring bound_dev_if of the rdma_dev_addr, refer to the net namespace of rdma_cm_id stored in rdma_dev_addr. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-22RDMA/cma: Update cma_validate_port to honor net namespaceParav Pandit
cma_validate_port uses rdma_dev_addr to validate the port of the cm_id. It needs to honor the net namespace which is setup during cm_id creation when finding netdevice. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-22RDMA/cma: Refactor to access multiple fields of rdma_dev_addrParav Pandit
Pass the rdma_cm_id so that multiple fields of the rdma_dev_addr structure can be accessed, instead of passing each individual fields. This is needed to access some additional fields in followup patches. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-22RDMA/cma: Check existence of netdevice during port validationParav Pandit
If valid netdevice is not found for RoCE, GID table should not be searched with NULL netdevice. Doing so causes the search routines to ignore the netdev argument and may match the wrong GID table entry if the netdev is deleted. Fixes: abae1b71dd37 ("IB/cma: cma_validate_port should verify the port and netdevice") Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-22bus: ti-sysc: Fix smartreflex sysc maskTony Lindgren
The enawakeup bit is in a different location for smartreflex compared to the "ti,sysc-omap2" compatible. Fixes: 70a65240efb1 ("bus: ti-sysc: Add register bits for interconnect target modules") Signed-off-by: Tony Lindgren <tony@atomide.com>
2018-01-22power: supply: max17042_battery: Check battery current for status when suppliedHans de Goede
Even though the system is supplied, it may still be discharging if the supply is e.g. only delivering 5V 0.5A. Check the avg battery current if available for more accurate status reporting. Cc: James <kernel@madingley.org> Suggested-by: James <kernel@madingley.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2018-01-22sparc64: Oracle DAX driverRob Gardner
DAX is a coprocessor which resides on the SPARC M7 (DAX1) and M8 (DAX2) processor chips, and has direct access to the CPU's L3 caches as well as physical memory. It can perform several operations on data streams with various input and output formats. This driver provides a transport mechanism and has limited knowledge of the various opcodes and data formats. A user space library provides high level services and translates these into low level commands which are then passed into the driver and subsequently the hypervisor and the coprocessor. The library is the recommended way for applications to use the coprocessor, and the driver interface is not intended for general use. Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com> Signed-off-by: Sanath Kumar <sanath099@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22staging: rtl8723bs: hal_com_phycfg: Remove unneeded semicolonsChristopher Díaz Riveros
Trivial fix removes unneeded semicolons after switch blocks. This issue was detected by using the Coccinelle software. Signed-off-by: Christopher Díaz Riveros <chrisadr@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-22net: mvpp2: enable ACPI support in the driverMarcin Wojtas
This patch introduces an alternative way of obtaining resources - via ACPI tables provided by firmware. Enabling coexistence with the DT support, in addition to the OF_*->device_*/fwnode_* API replacement, required following steps to be taken: * Add mvpp2_acpi_match table * Omit clock configuration and obtain tclk from the property - in ACPI world, the firmware is responsible for clock maintenance. * Disable comphy and syscon handling as they are not available for ACPI. * Modify way of obtaining interrupts - use newly introduced fwnode_irq_get() routine * Until proper MDIO bus and PHY handling with ACPI is established in the kernel, use only link interrupts feature in the driver. For the RGMII port it results in depending on GMAC settings done during firmware stage. * When booting with ACPI MVPP2_QDIST_MULTI_MODE is picked by default, as there is no need to keep any kind of the backward compatibility. Moreover, a memory region used by mvmdio driver is usually placed in the middle of the address space of the PP2 network controller. The MDIO base address is obtained without requesting memory region (by devm_ioremap() call) in mvmdio.c, later overlapping resources are requested by the network driver, which is responsible for avoiding a concurrent access. In case the MDIO memory region is declared in the ACPI, it can already appear as 'in-use' in the OS. Because it is overlapped by second region of the network controller, make sure it is released, before requesting it again. The care is taken by mvpp2 driver to avoid concurrent access to this memory region. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: mvpp2: use device_*/fwnode_* APIs instead of of_*Marcin Wojtas
OF functions can be used only for the driver using DT. As a preparation for introducing ACPI support in mvpp2 driver, use struct fwnode_handle in order to obtain properties from the hardware description. This patch replaces of_* function with device_*/fwnode_* where possible in the mvpp2. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22net: mvpp2: simplify maintaining enabled ports' listMarcin Wojtas
'port_count' field of the mvpp2 structure holds an overall amount of available ports, based on DT nodes status. In order to be prepared to support other HW description, obtain the value by incrementing it upon each successful port initialization. This allowed for simplifying port indexing in the controller's private array, whose size is now not dynamically allocated, but fixed to MVPP2_MAX_PORTS. This patch simplifies creating and filling list of enabled ports and is a part of the preparation for adding ACPI support in the mvpp2 driver. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22device property: Allow iterating over available child fwnodesMarcin Wojtas
Implement a new helper function fwnode_get_next_available_child_node(), which enables obtaining next enabled child fwnode, which works on a similar basis to OF's of_get_next_available_child(). This commit also introduces a macro, thanks to which it is possible to iterate over the available fwnodes, using the new function described above. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22device property: Introduce fwnode_irq_get()Marcin Wojtas
Until now there were two very similar functions allowing to get Linux IRQ number from ACPI handle (acpi_irq_get()) and OF node (of_irq_get()). The first one appeared to be used only as a subroutine of platform_irq_get(), which (in the generic code) limited IRQ obtaining from _CRS method only to nodes associated to kernel's struct platform_device. This patch introduces a new helper routine - fwnode_irq_get(), which allows to get the IRQ number directly from the fwnode to be used as common for OF/ACPI worlds. It is usable not only for the parents fwnodes, but also for the child nodes comprising their own _CRS methods with interrupts description. In order to be able o satisfy compilation with !CONFIG_ACPI and also simplify the new code, introduce a helper macro (ACPI_HANDLE_FWNODE), with which it is possible to reach an ACPI handle directly from its fwnode. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>