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path: root/drivers/nfc
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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>
2021-05-31nfc: pn533: 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/20210531073902.7111-2-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: mrvl: simplify with module_driverKrzysztof Kozlowski
Remove standard module init/exit boilerplate with module_driver() which also annotates the functions with __init. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073902.7111-1-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: mrvl: correct minor coding style violationsKrzysztof Kozlowski
Correct block comments and usage of tab in function definition. No functional change. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073522.6720-4-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: mrvl: use SPDX-License-IdentifierKrzysztof Kozlowski
Use SPDX-License-Identifier: GPL-2.0-only, instead of hand writing it. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073522.6720-3-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: mei_phy: 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/20210531073522.6720-2-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-31nfc: fdp: 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. This allows also to remove several local variables and entire fdp_nci_recv_frame() function (whose purpose was only to log). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531073522.6720-1-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: st95hf: mark ACPI and OF device ID tables as maybe unusedKrzysztof Kozlowski
The driver can match either via OF or ACPI ID tables. If one configuration is disabled, the table will be unused: drivers/nfc/st95hf/core.c:1059:34: warning: ‘st95hf_spi_of_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-12-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: st21nfca: mark ACPI and OF device ID tables as maybe unusedKrzysztof Kozlowski
The driver can match either via OF or ACPI ID tables. If one configuration is disabled, the table will be unused: drivers/nfc/st21nfca/i2c.c:593:34: warning: ‘of_st21nfca_i2c_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-11-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: st-nci: mark ACPI and OF device ID tables as maybe unusedKrzysztof Kozlowski
The driver can match either via OF or ACPI ID tables. If one configuration is disabled, the table will be unused: drivers/nfc/st-nci/spi.c:296:34: warning: ‘of_st_nci_spi_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-10-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: pn544: mark ACPI and OF device ID tables as maybe unusedKrzysztof Kozlowski
The driver can match either via OF or ACPI ID tables. If one configuration is disabled, the table will be unused: drivers/nfc/pn544/i2c.c:53:36: warning: ‘pn544_hci_i2c_acpi_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-9-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: s3fwrn5: mark OF device ID tables as maybe unusedKrzysztof Kozlowski
The driver can match either via OF or I2C ID tables. If OF is disabled, the table will be unused: drivers/nfc/s3fwrn5/i2c.c:265:34: warning: ‘of_s3fwrn5_i2c_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-8-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: pn533: mark OF device ID tables as maybe unusedKrzysztof Kozlowski
The driver can match either via OF or I2C ID tables. If OF is disabled, the table will be unused: drivers/nfc/pn533/i2c.c:252:34: warning: ‘of_pn533_i2c_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-7-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: mrvl: skip impossible NCI_MAX_PAYLOAD_SIZE checkKrzysztof Kozlowski
The nci_ctrl_hdr.plen field us u8, so checkign if it is bigger than NCI_MAX_PAYLOAD_SIZE does not make any sense. Fix warning reported by Smatch: drivers/nfc/nfcmrvl/i2c.c:52 nfcmrvl_i2c_read() warn: impossible condition '(nci_hdr.plen > 255) => (0-255 > 255)' Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-6-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: mrvl: mark OF device ID tables as maybe unusedKrzysztof Kozlowski
The driver can match either via OF or I2C ID tables. If OF is disabled, the table will be unused: drivers/nfc/nfcmrvl/spi.c:199:34: warning: ‘of_nfcmrvl_spi_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-5-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: pn533: drop of_match_ptr from device ID tableKrzysztof Kozlowski
The driver can match only via the DT table so the table should be always used and the of_match_ptr does not have any sense (this also allows ACPI matching via PRP0001, even though it might be not relevant here). This fixes compile warning (!CONFIG_OF): drivers/nfc/pn533/i2c.c:252:34: warning: ‘of_pn533_i2c_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-4-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: port100: correct kerneldoc for structureKrzysztof Kozlowski
The port100_in_rf_setting structure does not contain valid kerneldoc docummentation, unlike the port100_tg_rf_setting structure. Correct the kerneldoc to fix W=1 warnings: warning: This comment starts with '/**', but isn't a kernel-doc comment. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-3-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: fdp: drop ACPI_PTR from device ID tableKrzysztof Kozlowski
The driver can match only via the ACPI ID table so the table should be always used and the ACPI_PTR does not have any sense. This fixes fixes compile warning (!CONFIG_ACPI): drivers/nfc/fdp/i2c.c:362:36: warning: ‘fdp_nci_i2c_acpi_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-2-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-28nfc: fdp: correct kerneldoc for structureKrzysztof Kozlowski
Since structure comments are not kerneldoc, remove the double ** to fix W=1 warnings: warning: This comment starts with '/**', but isn't a kernel-doc comment. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210528124200.79655-1-krzysztof.kozlowski@canonical.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
cdc-wdm: s/kill_urbs/poison_urbs/ to fix build Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-26nfc: st-nci: remove unnecessary labelswengjianfeng
Some labels are only used once, 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> Link: https://lore.kernel.org/r/20210526011624.11204-1-samirweng1979@163.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-26nfc: st95hf: remove unnecessary assignment and labelwengjianfeng
In function st95hf_in_send_cmd, the variable rc is assigned then goto error label, which just returns rc, so we use return to replace it. Since error label only used once in the function, so we remove error label. Signed-off-by: wengjianfeng <wengjianfeng@yulong.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210526005651.12652-1-samirweng1979@163.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-05-24nfc: st-nci: remove unnecessary assignment and labelwengjianfeng
In function st_nci_hci_network_init, the variable r is assigned then goto exit label, which just return r, so we use return to replace it. and exit label only used once at here, so we remove exit label. Signed-off-by: wengjianfeng <wengjianfeng@yulong.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit (git 2.34.1) at 2024-06-12 16:58:01 +0000