• Jae Hyun Yoo's avatar
    Revert "i3c master: fix missing destroy_workqueue() on error in i3c_master_register" · 0d95f41e
    Jae Hyun Yoo authored
    Adding the destroy_workqueue call in i3c_master_register introduced below
    kernel warning because it makes duplicate destroy_workqueue calls when
    i3c_master_register fails after allocating the workqueue. The workqueue will
    be destroyed by i3c_masterdev_release which is called by put_device at the
    end of the i3c_master_register function eventually in failure cases so the
    workqueue doesn't need to be destroyed in i3c_master_register.
    
    [    6.972952] WARNING: CPU: 1 PID: 1 at lib/list_debug.c:48 __list_del_entry_valid+0x9c/0xf4
    [    6.982205] list_del corruption, 8fe03c08->prev is LIST_POISON2 (00000122)
    [    6.989910] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G        W         5.10.23-c12838a-dirty-31dc772 #1
    [    7.000295] Hardware name: Generic DT based system
    [    7.005638] Backtrace:
    [    7.008369] [<809133f0>] (dump_backtrace) from [<80913644>] (show_stack+0x20/0x24)
    [    7.016819]  r7:00000030 r6:60000013 r5:00000000 r4:813b5d40
    [    7.023137] [<80913624>] (show_stack) from [<8091e1a0>] (dump_stack+0x9c/0xb0)
    [    7.031201] [<8091e104>] (dump_stack) from [<8011fa30>] (__warn+0xf8/0x154)
    [    7.038972]  r7:00000030 r6:00000009 r5:804fa1c8 r4:80b6eca4
    [    7.045289] [<8011f938>] (__warn) from [<80913d14>] (warn_slowpath_fmt+0x8c/0xc0)
    [    7.053641]  r7:00000030 r6:80b6eca4 r5:80b6ed74 r4:818cc000
    [    7.059960] [<80913c8c>] (warn_slowpath_fmt) from [<804fa1c8>] (__list_del_entry_valid+0x9c/0xf4)
    [    7.069866]  r9:96becf8c r8:818cc000 r7:8fe03c10 r6:8fe03c00 r5:8fe03ba0 r4:ff7ead4c
    [    7.078513] [<804fa12c>] (__list_del_entry_valid) from [<8013f0b4>] (destroy_workqueue+0x1c4/0x23c)
    [    7.088615] [<8013eef0>] (destroy_workqueue) from [<806aa124>] (i3c_masterdev_release+0x40/0xb0)
    [    7.098421]  r7:00000000 r6:81a43b80 r5:8fe65360 r4:8fe65048
    [    7.104740] [<806aa0e4>] (i3c_masterdev_release) from [<805f3f04>] (device_release+0x40/0xb0)
    [    7.114254]  r5:00000000 r4:8fe65048
    [    7.118245] [<805f3ec4>] (device_release) from [<808fe754>] (kobject_put+0xc8/0x204)
    [    7.126885]  r5:813978dc r4:8fe65048
    [    7.130877] [<808fe68c>] (kobject_put) from [<805f5fbc>] (put_device+0x20/0x24)
    [    7.139037]  r7:8fe65358 r6:8fe65368 r5:8fe65358 r4:8fe65048
    [    7.145355] [<805f5f9c>] (put_device) from [<806abac4>] (i3c_master_register+0x338/0xb00)
    [    7.154487] [<806ab78c>] (i3c_master_register) from [<806ae084>] (dw_i3c_probe+0x224/0x24c)
    [    7.163811]  r10:00000000 r9:8fe7a100 r8:00000032 r7:819fa810 r6:819fa800 r5:8fe65040
    [    7.172547]  r4:00000000
    [    7.175376] [<806ade60>] (dw_i3c_probe) from [<805fdc14>] (platform_drv_probe+0x44/0x80)
    [    7.184409]  r9:813a25c0 r8:00000000 r7:815ec114 r6:00000000 r5:813a25c0 r4:819fa810
    [    7.193053] [<805fdbd0>] (platform_drv_probe) from [<805fb83c>] (really_probe+0x108/0x50c)
    [    7.202275]  r5:815ec004 r4:819fa810
    [    7.206265] [<805fb734>] (really_probe) from [<805fc180>] (driver_probe_device+0xb4/0x190)
    [    7.215492]  r10:813dc000 r9:80c4385c r8:000000d9 r7:813a25c0 r6:819fa810 r5:00000000
    [    7.224228]  r4:813a25c0
    [    7.227055] [<805fc0cc>] (driver_probe_device) from [<805fc5cc>] (device_driver_attach+0xb8/0xc0)
    [    7.236959]  r9:80c4385c r8:000000d9 r7:813a25c0 r6:819fa854 r4:819fa810
    [    7.244439] [<805fc514>] (device_driver_attach) from [<805fc65c>] (__driver_attach+0x88/0x16c)
    [    7.254051]  r7:00000000 r6:819fa810 r5:00000000 r4:813a25c0
    [    7.260369] [<805fc5d4>] (__driver_attach) from [<805f954c>] (bus_for_each_dev+0x88/0xc8)
    [    7.269489]  r7:00000000 r6:818cc000 r5:805fc5d4 r4:813a25c0
    [    7.275806] [<805f94c4>] (bus_for_each_dev) from [<805fc76c>] (driver_attach+0x2c/0x30)
    [    7.284739]  r7:81397c98 r6:00000000 r5:8fe7db80 r4:813a25c0
    [    7.291057] [<805fc740>] (driver_attach) from [<805f9eec>] (bus_add_driver+0x120/0x200)
    [    7.299984] [<805f9dcc>] (bus_add_driver) from [<805fce44>] (driver_register+0x98/0x128)
    [    7.309005]  r7:80c4383c r6:00000000 r5:00000000 r4:813a25c0
    [    7.315323] [<805fcdac>] (driver_register) from [<805fedb4>] (__platform_driver_register+0x50/0x58)
    [    7.325410]  r5:818cc000 r4:81397c98
    [    7.329404] [<805fed64>] (__platform_driver_register) from [<80c23398>] (dw_i3c_driver_init+0x24/0x28)
    [    7.339790]  r5:818cc000 r4:80c23374
    [    7.343784] [<80c23374>] (dw_i3c_driver_init) from [<80c01300>] (do_one_initcall+0xac/0x1d0)
    [    7.353206] [<80c01254>] (do_one_initcall) from [<80c01630>] (kernel_init_freeable+0x1a8/0x204)
    [    7.362916]  r8:000000d9 r7:80c4383c r6:00000007 r5:819ca2c0 r4:80c67680
    [    7.370398] [<80c01488>] (kernel_init_freeable) from [<8091eb18>] (kernel_init+0x18/0x12c)
    [    7.379616]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8091eb00
    [    7.388343]  r4:00000000
    [    7.391170] [<8091eb00>] (kernel_init) from [<80100148>] (ret_from_fork+0x14/0x2c)
    [    7.399607] Exception stack(0x818cdfb0 to 0x818cdff8)
    [    7.405243] dfa0:                                     00000000 00000000 00000000 00000000
    [    7.414371] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    7.423499] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
    [    7.430879]  r5:8091eb00 r4:00000000
    
    This reverts commit 59165d16.
    
    Fixes: 59165d16 ("i3c master: fix missing destroy_workqueue() on error in i3c_master_register")
    Signed-off-by: default avatarJae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
    Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
    Link: https://lore.kernel.org/r/20210408172803.24599-1-jae.hyun.yoo@linux.intel.com
    0d95f41e
master.c 66.8 KB