From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: [linux-next:master 11135/15099] drivers/char/sonypi.c:766 input_keyrelease() error: calling 'spin_unlock_irqrestore()' with bogus flags
Date: Thu, 25 Jun 2026 13:03:44 +0800 [thread overview]
Message-ID: <202606251222.MpiSOBwu-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 4e5dfb7c84012007c3c7061126491bbc92d71bf1
commit: e07d10ed0f238d3f4a8276932a36fe1f74775621 [11135/15099] lib/Kconfig.debug: enable CONFIG_PREEMPT_RT for syzbot kernels.
:::::: branch date: 2 days ago
:::::: commit date: 2 weeks ago
config: i386-randconfig-r073-20260624 (https://download.01.org/0day-ci/archive/20260625/202606251222.MpiSOBwu-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
smatch: v0.5.0-9185-gbcc58b9c
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202606251222.MpiSOBwu-lkp@intel.com/
New smatch warnings:
drivers/char/sonypi.c:766 input_keyrelease() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/char/sonypi.c:915 sonypi_misc_read() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/misc/hpilo.c:605 ilo_open() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/virt/vboxguest/vboxguest_core.c:798 vbg_acquire_session_capabilities() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/virt/vboxguest/vboxguest_core.c:1246 vbg_ioctl_wait_for_events() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/hte/hte.c:221 hte_ts_put() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/hte/hte.c:301 hte_ts_dis_en_common() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/rpmsg/qcom_glink_native.c:378 qcom_glink_tx() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/rpmsg/qcom_glink_native.c:519 qcom_glink_send_open_req() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/rpmsg/qcom_glink_native.c:592 qcom_glink_rx_done_work() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/rpmsg/qcom_glink_native.c:1508 __qcom_glink_send() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/rpmsg/qcom_glink_native.c:1705 qcom_glink_rx_open() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/media/rc/serial_ir.c:667 serial_ir_tx() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/media/rc/ite-cir.c:449 ite_tx_ir() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/virtio/virtio_rtc_driver.c:253 viortc_do_cb() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/media/pci/ivtv/ivtv-queue.c:129 ivtv_queue_move() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c:749 amdgpu_ring_set_fence_errors_and_reemit() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/hid/hid-nintendo.c:844 joycon_enforce_subcmd_rate() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:285 amdgpu_display_crtc_page_flip_target() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/platform/x86/intel_ips.c:666 mch_exceeded() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/i2c/busses/i2c-elektor.c:116 pcf_isa_waitforpin() error: calling 'spin_unlock_irqrestore()' with bogus flags
mm/slub.c:3835 get_from_partial_node() error: calling 'spin_unlock_irqrestore()' with bogus flags
mm/slub.c:4392 alloc_from_new_slab() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/comedi/drivers/amplc_pc236_common.c:53 pc236_intr_check() error: calling 'spin_unlock_irqrestore()' with bogus flags
lib/test_context-analysis.c:110 test_spinlock() error: calling 'spin_unlock_irqrestore()' with bogus flags
lib/test_context-analysis.c:127 test_spinlock_trylock_extra() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:3603 gfx_v9_4_3_reset_kcq() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:9562 gfx_v10_0_reset_kgq() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:9632 gfx_v10_0_reset_kcq() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c:7318 gfx_v9_0_reset_kcq() error: calling 'spin_unlock_irqrestore()' with bogus flags
Old smatch warnings:
drivers/rpmsg/qcom_glink_native.c:393 qcom_glink_tx() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/rpmsg/qcom_glink_native.c:504 qcom_glink_send_open_req() error: strcpy() 'channel->name' too large for 'req->data' (1010102 vs 32)
drivers/media/rc/ite-cir.c:469 ite_tx_ir() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/virtio/virtio_rtc_driver.c:259 viortc_do_cb() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/media/pci/ivtv/ivtv-queue.c:169 ivtv_queue_move() error: calling 'spin_unlock_irqrestore()' with bogus flags
lib/test_context-analysis.c:103 test_raw_spinlock_trylock_extra() warn: mixing irq and irqsave
include/linux/spinlock.h:541 class_raw_spinlock_try_constructor() warn: passing zero to 'ERR_PTR'
lib/test_context-analysis.c:127 test_spinlock_trylock_extra() warn: mixing irq and irqsave
include/linux/spinlock.h:593 class_spinlock_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/mutex.h:254 class_mutex_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/rwsem.h:260 class_rwsem_read_try_constructor() warn: passing zero to 'ERR_PTR'
include/linux/rwsem.h:271 class_rwsem_write_try_constructor() warn: passing zero to 'ERR_PTR'
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:2201 gfx_v9_4_3_xcc_kcq_fini_register() error: buffer overflow 'adev->gfx.compute_ring' 64 <= u32max
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:2231 gfx_v9_4_3_xcc_kcq_resume() error: buffer overflow 'adev->gfx.compute_ring' 64 <= u32max
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:3307 gfx_v9_4_3_eop_irq() error: buffer overflow 'adev->gfx.compute_ring' 64 <= u32max
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:3343 gfx_v9_4_3_fault() error: buffer overflow 'adev->gfx.compute_ring' 64 <= u32max
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:3609 gfx_v9_4_3_reset_kcq() error: calling 'spin_unlock_irqrestore()' with bogus flags
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:4800 gfx_v9_4_3_set_ring_funcs() error: buffer overflow 'adev->gfx.compute_ring' 64 <= u32max
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4292 gfx_v10_0_init_microcode() warn: 'adev->gfx.rlc_fw' from request_firmware() not released on lines: 4292.
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c:7324 gfx_v9_0_reset_kcq() error: calling 'spin_unlock_irqrestore()' with bogus flags
vim +766 drivers/char/sonypi.c
^1da177e4c3f415 Linus Torvalds 2005-04-16 761
c4028958b6ecad0 David Howells 2006-11-22 762 static void input_keyrelease(struct work_struct *work)
^1da177e4c3f415 Linus Torvalds 2005-04-16 763 {
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 764 struct sonypi_keypress kp;
^1da177e4c3f415 Linus Torvalds 2005-04-16 765
7acd72eb85f1c7a Stefani Seibold 2009-12-21 @766 while (kfifo_out_locked(&sonypi_device.input_fifo, (unsigned char *)&kp,
c1e13f25674ed56 Stefani Seibold 2009-12-21 767 sizeof(kp), &sonypi_device.input_fifo_lock)
c1e13f25674ed56 Stefani Seibold 2009-12-21 768 == sizeof(kp)) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 769 msleep(10);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 770 input_report_key(kp.dev, kp.key, 0);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 771 input_sync(kp.dev);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 772 }
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 773 }
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 774
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 775 static void sonypi_report_input_event(u8 event)
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 776 {
b416f2e452b6c0f Dmitry Torokhov 2005-09-15 777 struct input_dev *jog_dev = sonypi_device.input_jog_dev;
b416f2e452b6c0f Dmitry Torokhov 2005-09-15 778 struct input_dev *key_dev = sonypi_device.input_key_dev;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 779 struct sonypi_keypress kp = { NULL };
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 780 int i;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 781
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 782 switch (event) {
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 783 case SONYPI_EVENT_JOGDIAL_UP:
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 784 case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 785 input_report_rel(jog_dev, REL_WHEEL, 1);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 786 input_sync(jog_dev);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 787 break;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 788
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 789 case SONYPI_EVENT_JOGDIAL_DOWN:
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 790 case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 791 input_report_rel(jog_dev, REL_WHEEL, -1);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 792 input_sync(jog_dev);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 793 break;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 794
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 795 case SONYPI_EVENT_JOGDIAL_PRESSED:
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 796 kp.key = BTN_MIDDLE;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 797 kp.dev = jog_dev;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 798 break;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 799
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 800 case SONYPI_EVENT_FNKEY_RELEASED:
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 801 /* Nothing, not all VAIOs generate this event */
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 802 break;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 803
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 804 default:
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 805 for (i = 0; sonypi_inputkeys[i].sonypiev; i++)
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 806 if (event == sonypi_inputkeys[i].sonypiev) {
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 807 kp.dev = key_dev;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 808 kp.key = sonypi_inputkeys[i].inputev;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 809 break;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 810 }
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 811 break;
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 812 }
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 813
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 814 if (kp.dev) {
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 815 input_report_key(kp.dev, kp.key, 1);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 816 input_sync(kp.dev);
7acd72eb85f1c7a Stefani Seibold 2009-12-21 817 kfifo_in_locked(&sonypi_device.input_fifo,
c1e13f25674ed56 Stefani Seibold 2009-12-21 818 (unsigned char *)&kp, sizeof(kp),
c1e13f25674ed56 Stefani Seibold 2009-12-21 819 &sonypi_device.input_fifo_lock);
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 820 schedule_work(&sonypi_device.input_work);
^1da177e4c3f415 Linus Torvalds 2005-04-16 821 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 822 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 823
^1da177e4c3f415 Linus Torvalds 2005-04-16 824 /* Interrupt handler: some event is available */
7d12e780e003f93 David Howells 2006-10-05 825 static irqreturn_t sonypi_irq(int irq, void *dev_id)
^1da177e4c3f415 Linus Torvalds 2005-04-16 826 {
^1da177e4c3f415 Linus Torvalds 2005-04-16 827 u8 v1, v2, event = 0;
^1da177e4c3f415 Linus Torvalds 2005-04-16 828 int i, j;
^1da177e4c3f415 Linus Torvalds 2005-04-16 829
^1da177e4c3f415 Linus Torvalds 2005-04-16 830 v1 = inb_p(sonypi_device.ioport1);
^1da177e4c3f415 Linus Torvalds 2005-04-16 831 v2 = inb_p(sonypi_device.ioport1 + sonypi_device.evtype_offset);
^1da177e4c3f415 Linus Torvalds 2005-04-16 832
^1da177e4c3f415 Linus Torvalds 2005-04-16 833 for (i = 0; sonypi_eventtypes[i].model; i++) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 834 if (sonypi_device.model != sonypi_eventtypes[i].model)
^1da177e4c3f415 Linus Torvalds 2005-04-16 835 continue;
^1da177e4c3f415 Linus Torvalds 2005-04-16 836 if ((v2 & sonypi_eventtypes[i].data) !=
^1da177e4c3f415 Linus Torvalds 2005-04-16 837 sonypi_eventtypes[i].data)
^1da177e4c3f415 Linus Torvalds 2005-04-16 838 continue;
^1da177e4c3f415 Linus Torvalds 2005-04-16 839 if (!(mask & sonypi_eventtypes[i].mask))
^1da177e4c3f415 Linus Torvalds 2005-04-16 840 continue;
^1da177e4c3f415 Linus Torvalds 2005-04-16 841 for (j = 0; sonypi_eventtypes[i].events[j].event; j++) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 842 if (v1 == sonypi_eventtypes[i].events[j].data) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 843 event = sonypi_eventtypes[i].events[j].event;
^1da177e4c3f415 Linus Torvalds 2005-04-16 844 goto found;
^1da177e4c3f415 Linus Torvalds 2005-04-16 845 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 846 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 847 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 848
^1da177e4c3f415 Linus Torvalds 2005-04-16 849 if (verbose)
^1da177e4c3f415 Linus Torvalds 2005-04-16 850 printk(KERN_WARNING
^1da177e4c3f415 Linus Torvalds 2005-04-16 851 "sonypi: unknown event port1=0x%02x,port2=0x%02x\n",
^1da177e4c3f415 Linus Torvalds 2005-04-16 852 v1, v2);
^1da177e4c3f415 Linus Torvalds 2005-04-16 853 /* We need to return IRQ_HANDLED here because there *are*
^1da177e4c3f415 Linus Torvalds 2005-04-16 854 * events belonging to the sonypi device we don't know about,
^1da177e4c3f415 Linus Torvalds 2005-04-16 855 * but we still don't want those to pollute the logs... */
^1da177e4c3f415 Linus Torvalds 2005-04-16 856 return IRQ_HANDLED;
^1da177e4c3f415 Linus Torvalds 2005-04-16 857
^1da177e4c3f415 Linus Torvalds 2005-04-16 858 found:
^1da177e4c3f415 Linus Torvalds 2005-04-16 859 if (verbose > 1)
^1da177e4c3f415 Linus Torvalds 2005-04-16 860 printk(KERN_INFO
^1da177e4c3f415 Linus Torvalds 2005-04-16 861 "sonypi: event port1=0x%02x,port2=0x%02x\n", v1, v2);
^1da177e4c3f415 Linus Torvalds 2005-04-16 862
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 863 if (useinput)
fb2ce3c005ede30 Dmitry Torokhov 2005-06-30 864 sonypi_report_input_event(event);
^1da177e4c3f415 Linus Torvalds 2005-04-16 865
7acd72eb85f1c7a Stefani Seibold 2009-12-21 866 kfifo_in_locked(&sonypi_device.fifo, (unsigned char *)&event,
c1e13f25674ed56 Stefani Seibold 2009-12-21 867 sizeof(event), &sonypi_device.fifo_lock);
^1da177e4c3f415 Linus Torvalds 2005-04-16 868 kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
^1da177e4c3f415 Linus Torvalds 2005-04-16 869 wake_up_interruptible(&sonypi_device.fifo_proc_list);
^1da177e4c3f415 Linus Torvalds 2005-04-16 870
^1da177e4c3f415 Linus Torvalds 2005-04-16 871 return IRQ_HANDLED;
^1da177e4c3f415 Linus Torvalds 2005-04-16 872 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 873
^1da177e4c3f415 Linus Torvalds 2005-04-16 874 static int sonypi_misc_fasync(int fd, struct file *filp, int on)
^1da177e4c3f415 Linus Torvalds 2005-04-16 875 {
60aa49243d09afc Jonathan Corbet 2009-02-01 876 return fasync_helper(fd, filp, on, &sonypi_device.fifo_async);
^1da177e4c3f415 Linus Torvalds 2005-04-16 877 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 878
^1da177e4c3f415 Linus Torvalds 2005-04-16 879 static int sonypi_misc_release(struct inode *inode, struct file *file)
^1da177e4c3f415 Linus Torvalds 2005-04-16 880 {
c6c60106b9584f1 Matthias Kaehlcke 2007-04-24 881 mutex_lock(&sonypi_device.lock);
^1da177e4c3f415 Linus Torvalds 2005-04-16 882 sonypi_device.open_count--;
c6c60106b9584f1 Matthias Kaehlcke 2007-04-24 883 mutex_unlock(&sonypi_device.lock);
^1da177e4c3f415 Linus Torvalds 2005-04-16 884 return 0;
^1da177e4c3f415 Linus Torvalds 2005-04-16 885 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 886
^1da177e4c3f415 Linus Torvalds 2005-04-16 887 static int sonypi_misc_open(struct inode *inode, struct file *file)
^1da177e4c3f415 Linus Torvalds 2005-04-16 888 {
c6c60106b9584f1 Matthias Kaehlcke 2007-04-24 889 mutex_lock(&sonypi_device.lock);
^1da177e4c3f415 Linus Torvalds 2005-04-16 890 /* Flush input queue on first open */
^1da177e4c3f415 Linus Torvalds 2005-04-16 891 if (!sonypi_device.open_count)
45465487897a1c6 Stefani Seibold 2009-12-21 892 kfifo_reset(&sonypi_device.fifo);
^1da177e4c3f415 Linus Torvalds 2005-04-16 893 sonypi_device.open_count++;
c6c60106b9584f1 Matthias Kaehlcke 2007-04-24 894 mutex_unlock(&sonypi_device.lock);
6432e734c99ed68 John Kacur 2009-10-18 895
^1da177e4c3f415 Linus Torvalds 2005-04-16 896 return 0;
^1da177e4c3f415 Linus Torvalds 2005-04-16 897 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 898
^1da177e4c3f415 Linus Torvalds 2005-04-16 899 static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
^1da177e4c3f415 Linus Torvalds 2005-04-16 900 size_t count, loff_t *pos)
^1da177e4c3f415 Linus Torvalds 2005-04-16 901 {
^1da177e4c3f415 Linus Torvalds 2005-04-16 902 ssize_t ret;
^1da177e4c3f415 Linus Torvalds 2005-04-16 903 unsigned char c;
^1da177e4c3f415 Linus Torvalds 2005-04-16 904
45465487897a1c6 Stefani Seibold 2009-12-21 905 if ((kfifo_len(&sonypi_device.fifo) == 0) &&
^1da177e4c3f415 Linus Torvalds 2005-04-16 906 (file->f_flags & O_NONBLOCK))
^1da177e4c3f415 Linus Torvalds 2005-04-16 907 return -EAGAIN;
^1da177e4c3f415 Linus Torvalds 2005-04-16 908
^1da177e4c3f415 Linus Torvalds 2005-04-16 909 ret = wait_event_interruptible(sonypi_device.fifo_proc_list,
45465487897a1c6 Stefani Seibold 2009-12-21 910 kfifo_len(&sonypi_device.fifo) != 0);
^1da177e4c3f415 Linus Torvalds 2005-04-16 911 if (ret)
^1da177e4c3f415 Linus Torvalds 2005-04-16 912 return ret;
^1da177e4c3f415 Linus Torvalds 2005-04-16 913
^1da177e4c3f415 Linus Torvalds 2005-04-16 914 while (ret < count &&
7acd72eb85f1c7a Stefani Seibold 2009-12-21 @915 (kfifo_out_locked(&sonypi_device.fifo, &c, sizeof(c),
c1e13f25674ed56 Stefani Seibold 2009-12-21 916 &sonypi_device.fifo_lock) == sizeof(c))) {
^1da177e4c3f415 Linus Torvalds 2005-04-16 917 if (put_user(c, buf++))
^1da177e4c3f415 Linus Torvalds 2005-04-16 918 return -EFAULT;
^1da177e4c3f415 Linus Torvalds 2005-04-16 919 ret++;
^1da177e4c3f415 Linus Torvalds 2005-04-16 920 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 921
^1da177e4c3f415 Linus Torvalds 2005-04-16 922 if (ret > 0) {
496ad9aa8ef4480 Al Viro 2013-01-23 923 struct inode *inode = file_inode(file);
19f926a688f99a4 Jeff Layton 2023-10-04 924 inode_set_atime_to_ts(inode, current_time(inode));
^1da177e4c3f415 Linus Torvalds 2005-04-16 925 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 926
^1da177e4c3f415 Linus Torvalds 2005-04-16 927 return ret;
^1da177e4c3f415 Linus Torvalds 2005-04-16 928 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 929
:::::: The code at line 766 was first introduced by commit
:::::: 7acd72eb85f1c7a15e8b5eb554994949241737f1 kfifo: rename kfifo_put... into kfifo_in... and kfifo_get... into kfifo_out...
:::::: TO: Stefani Seibold <stefani@seibold.net>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-06-25 5:04 UTC|newest]
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