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path: root/drivers/nfc
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2021-10-26nfc: port100: fix using -ERRNO as command type maskKrzysztof Kozlowski
During probing, the driver tries to get a list (mask) of supported command types in port100_get_command_type_mask() function. The value is u64 and 0 is treated as invalid mask (no commands supported). The function however returns also -ERRNO as u64 which will be interpret as valid command mask. Return 0 on every error case of port100_get_command_type_mask(), so the probing will stop. Cc: <stable@vger.kernel.org> Fixes: 0347a6ab300a ("NFC: port100: Commands mechanism implementation") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-20nfc: st95hf: Make spi remove() callback return zeroUwe Kleine-König
If something goes wrong in the remove callback, returning an error code just results in an error message. The device still disappears. So don't skip disabling the regulator in st95hf_remove() if resetting the controller via spi fails. Also don't return an error code which just results in two error messages. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-09-23nfc: st-nci: Add SPI ID matching DT compatibleMark Brown
Currently autoloading for SPI devices does not use the DT ID table, it uses SPI modalises. Supporting OF modalises is going to be difficult if not impractical, an attempt was made but has been reverted, so ensure that module autoloading works for this driver by adding the part name used in the compatible to the list of SPI IDs. Fixes: 96c8395e2166 ("spi: Revert modalias changes") Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-26nfc: st95hf: remove unused header includesKrzysztof Kozlowski
Do not include unnecessary headers. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-26nfc: st21nfca: remove unused header includesKrzysztof Kozlowski
Do not include unnecessary headers. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-26nfc: st-nci: remove unused header includesKrzysztof Kozlowski
Do not include unnecessary headers. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-26nfc: pn544: remove unused header includesKrzysztof Kozlowski
Do not include unnecessary headers. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-26nfc: mrvl: remove unused header includesKrzysztof Kozlowski
Do not include unnecessary headers. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-26nfc: microread: remove unused header includesKrzysztof Kozlowski
Do not include unnecessary headers. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-18nfc: virtual_ncidev: Use wait queue instead of pollingBongsu Jeon
In previous version, the user level virtual device application that used this driver should have the polling scheme to read a NCI frame. To remove this polling scheme, use Wait Queue. Signed-off-by: Bongsu Jeon <bongsu.jeon@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Conflicting commits, all resolutions pretty trivial: drivers/bus/mhi/pci_generic.c 5c2c85315948 ("bus: mhi: pci-generic: configurable network interface MRU") 56f6f4c4eb2a ("bus: mhi: pci_generic: Apply no-op for wake using sideband wake boolean") drivers/nfc/s3fwrn5/firmware.c a0302ff5906a ("nfc: s3fwrn5: remove unnecessary label") 46573e3ab08f ("nfc: s3fwrn5: fix undefined parameter values in dev_err()") 801e541c79bb ("nfc: s3fwrn5: fix undefined parameter values in dev_err()") MAINTAINERS 7d901a1e878a ("net: phy: add Maxlinear GPY115/21x/24x driver") 8a7b46fa7902 ("MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-07-30nfc: constify local pointer variablesKrzysztof Kozlowski
Few pointers to struct nfc_target and struct nfc_se can be made const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-07-30nfc: mrvl: correct nfcmrvl_spi_parse_dt() device_node argumentKrzysztof Kozlowski
The device_node in nfcmrvl_spi_parse_dt() cannot be const as it is passed to OF functions which modify it. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-07-29nfc: mrvl: constify static nfcmrvl_if_opsKrzysztof Kozlowski
File-scope struct nfcmrvl_if_ops is not modified so can be made const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: mrvl: constify several pointersKrzysztof Kozlowski
Several functions do not modify pointed data so arguments and local variables can be const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: microread: constify several pointersKrzysztof Kozlowski
Several functions do not modify pointed data so arguments and local variables can be const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: fdp: constify several pointersKrzysztof Kozlowski
Several functions do not modify pointed data so arguments and local variables can be const for correctness and safety. This allows also making file-scope nci_core_get_config_otp_ram_version array const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: fdp: use unsigned int as loop iteratorKrzysztof Kozlowski
Loop iterators are simple integers, no point to optimize the size and use u8. It only raises the question whether the variable is used in some other context. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: fdp: drop unneeded cast for printing firmware size in dev_dbg()Krzysztof Kozlowski
Size of firmware is a type of size_t, so print it directly instead of casting to int. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: nfcsim: constify drvdata (struct nfcsim)Krzysztof Kozlowski
nfcsim_abort_cmd() does not modify struct nfcsim, so local variable can be a pointer to const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: virtual_ncidev: constify pointer to nfc_devKrzysztof Kozlowski
virtual_ncidev_ioctl() does not modify struct nfc_dev, so local variable can be a pointer to const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: trf7970a: constify several pointersKrzysztof Kozlowski
Several functions do not modify pointed data so arguments and local variables can be const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: port100: constify several pointersKrzysztof Kozlowski
Several functions do not modify pointed data so arguments and local variables can be const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29nfc: mei_phy: constify buffer passed to mei_nfc_send()Krzysztof Kozlowski
The buffer passed to mei_nfc_send() can be const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28nfc: nfcsim: fix use after free during module unloadKrzysztof Kozlowski
There is a use after free memory corruption during module exit: - nfcsim_exit() - nfcsim_device_free(dev0) - nfc_digital_unregister_device() This iterates over command queue and frees all commands, - dev->up = false - nfcsim_link_shutdown() - nfcsim_link_recv_wake() This wakes the sleeping thread nfcsim_link_recv_skb(). - nfcsim_link_recv_skb() Wake from wait_event_interruptible_timeout(), call directly the deb->cb callback even though (dev->up == false), - digital_send_cmd_complete() Dereference of "struct digital_cmd" cmd which was freed earlier by nfc_digital_unregister_device(). This causes memory corruption shortly after (with unrelated stack trace): nfc nfc0: NFC: nfcsim_recv_wq: Device is down llcp: nfc_llcp_recv: err -19 nfc nfc1: NFC: nfcsim_recv_wq: Device is down BUG: unable to handle page fault for address: ffffffffffffffed Call Trace: fsnotify+0x54b/0x5c0 __fsnotify_parent+0x1fe/0x300 ? vfs_write+0x27c/0x390 vfs_write+0x27c/0x390 ksys_write+0x63/0xe0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae KASAN report: BUG: KASAN: use-after-free in digital_send_cmd_complete+0x16/0x50 Write of size 8 at addr ffff88800a05f720 by task kworker/0:2/71 Workqueue: events nfcsim_recv_wq [nfcsim] Call Trace:  dump_stack_lvl+0x45/0x59  print_address_description.constprop.0+0x21/0x140  ? digital_send_cmd_complete+0x16/0x50  ? digital_send_cmd_complete+0x16/0x50  kasan_report.cold+0x7f/0x11b  ? digital_send_cmd_complete+0x16/0x50  ? digital_dep_link_down+0x60/0x60  digital_send_cmd_complete+0x16/0x50  nfcsim_recv_wq+0x38f/0x3d5 [nfcsim]  ? nfcsim_in_send_cmd+0x4a/0x4a [nfcsim]  ? lock_is_held_type+0x98/0x110  ? finish_wait+0x110/0x110  ? rcu_read_lock_sched_held+0x9c/0xd0  ? rcu_read_lock_bh_held+0xb0/0xb0  ? lockdep_hardirqs_on_prepare+0x12e/0x1f0 This flow of calling digital_send_cmd_complete() callback on driver exit is specific to nfcsim which implements reading and sending work queues. Since the NFC digital device was unregistered, the callback should not be called. Fixes: 204bddcb508f ("NFC: nfcsim: Make use of the Digital layer") Cc: <stable@vger.kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28nfc: s3fwrn5: fix undefined parameter values in dev_err()Tang Bin
In the function s3fwrn5_fw_download(), the 'ret' is not assigned, so the correct value should be given in dev_err function. Fixes: a0302ff5906a ("nfc: s3fwrn5: remove unnecessary label") Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-27nfc: s3fwrn5: fix undefined parameter values in dev_err()Tang Bin
In the function s3fwrn5_fw_download(), the 'ret' is not assigned, so the correct value should be given in dev_err function. Fixes: a0302ff5906a ("nfc: s3fwrn5: remove unnecessary label") Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-26nfc: s3fwrn5: remove unnecessary labelwengjianfeng
Simplify the code by removing unnecessary label and returning directly. Signed-off-by: wengjianfeng <wengjianfeng@yulong.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify nfc_digital_opsKrzysztof Kozlowski
Neither the core nor the drivers modify the passed pointer to struct nfc_digital_ops, so make it a pointer to const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify nfc_hci_opsKrzysztof Kozlowski
Neither the core nor the drivers modify the passed pointer to struct nfc_hci_ops, so make it a pointer to const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify nfc_opsKrzysztof Kozlowski
Neither the core nor the drivers modify the passed pointer to struct nfc_ops, so make it a pointer to const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify nfc_hci_gateKrzysztof Kozlowski
Neither the core nor the drivers modify the passed pointer to struct nfc_hci_gate, so make it a pointer to const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify pointer to nfc_vendor_cmdKrzysztof Kozlowski
Neither the core nor the drivers modify the passed pointer to struct nfc_vendor_cmd, so make it a pointer to const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: st21nfca: constify file-scope arraysKrzysztof Kozlowski
Driver only reads len_seq and wait_tab variables. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify nfc_phy_opsKrzysztof Kozlowski
Neither the core nor the drivers modify the passed pointer to struct nfc_phy_ops (consisting of function pointers), so make it a pointer to const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify nci_driver_ops (prop_ops and core_ops)Krzysztof Kozlowski
Neither the core nor the drivers modify the passed pointer to struct nci_driver_ops (consisting of function pointers), so make it a pointer to const for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: s3fwrn5: constify nci_opsKrzysztof Kozlowski
s3fwrn5 driver modifies static struct nci_ops only to set prop_ops. Since prop_ops is build time constant with known size, it can be made const. This allows to removeo the function setting the prop_ops - s3fwrn5_nci_get_prop_ops(). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25nfc: constify nci_opsKrzysztof Kozlowski
The struct nci_ops is modified by NFC core in only one case: nci_allocate_device() receives too many proprietary commands (prop_ops) to configure. This is a build time known constrain, so a graceful handling of such case is not necessary. Instead, fail the nci_allocate_device() and add BUILD_BUG_ON() to places which set these. This allows to constify the struct nci_ops (consisting of function pointers) for correctness and safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-23nfc: port100: constify protocol list arrayKrzysztof Kozlowski
File-scope "port100_protocol" array is read-only and passed as pointer to const, so it can be made a const to increase code safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-18NFC: nxp-nci: remove unnecessary labelwengjianfeng
Remove unnecessary label chunk_exit and return directly. Signed-off-by: wengjianfeng <wengjianfeng@yulong.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-18NFC: nxp-nci: remove unnecessary labelswengjianfeng
Simplify the code by removing unnecessary labels and returning directly. Signed-off-by: wengjianfeng <wengjianfeng@yulong.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-11nfc: fdp: remove unnecessary labelswengjianfeng
Some labels are meaningless, so we delete them and use the return statement instead of the goto statement. Signed-off-by: wengjianfeng <wengjianfeng@yulong.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-03nfc: mrvl: reduce the scope of local variablesKrzysztof Kozlowski
In two places the 'ep_desc' and 'skb' local variables are used only within if() or for() block, so they scope can be reduced which makes the entire code slightly easier to follow. No functional change. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-03nfc: mrvl: remove useless "continue" at end of loopKrzysztof Kozlowski
The "continue" statement at the end of a for loop does not have an effect. Entire loop contents can be slightly simplified to increase code readability. No functional change. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-01NFC: microread: Remove redundant assignment to variable errNigel Christian
In the case MICROREAD_CB_TYPE_READER_ALL clang reports a dead code warning. The error code assigned to variable err is already passed to async_cb(). The assignment is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-05-31nfc: st95hf: fix indentation to tabsKrzysztof Kozlowski
Use tabs to indent instead of spaces. No functional change. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073902.7111-7-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: st-nci: drop ftrace-like debugging messagesKrzysztof Kozlowski
Now that the kernel has ftrace, any debugging calls that just do "made it to this function!" and "leaving this function!" can be removed. Better to use standard debugging tools. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073902.7111-6-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: st21nfca: drop ftrace-like debugging messagesKrzysztof Kozlowski
Now that the kernel has ftrace, any debugging calls that just do "made it to this function!" and "leaving this function!" can be removed. Better to use standard debugging tools. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073902.7111-5-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: pn544: drop ftrace-like debugging messagesKrzysztof Kozlowski
Now that the kernel has ftrace, any debugging calls that just do "made it to this function!" and "leaving this function!" can be removed. Better to use standard debugging tools. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073902.7111-4-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: pn533: drop unneeded braces {} in ifKrzysztof Kozlowski
{} braces are not needed over single if-statement. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073902.7111-3-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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