| commit | 498c4b4e9c23855d17ecc2a108d949bb68020481 | |
| author | Jia-Ju Bai <baijiaju1990@163.com> | |
| Mon, 5 Jun 2017 07:30:16 +0000 (5 15:30 +0800) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Tue, 6 Jun 2017 14:16:10 +0000 (6 16:16 +0200) | ||
| tree | 1ca886f9c22960514b49587cd018c1e602315bc0 | treesnapshot (tar.gz zip) |
| parent | ac669251087d876d6e51eb648f98e575f0d0499d | commitdiff |
staging: rt5208: Fix a sleep-in-atomic bug in xd_copy_page
The driver may sleep under a spin lock, and the function call path is:
rtsx_exclusive_enter_ss (acquire the lock by spin_lock)
rtsx_enter_ss
rtsx_power_off_card
xd_cleanup_work
xd_delay_write
xd_finish_write
xd_copy_page
wait_timeout
schedule_timeout --> may sleep
To fix it, "wait_timeout" is replaced with mdelay in xd_copy_page.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver may sleep under a spin lock, and the function call path is:
rtsx_exclusive_enter_ss (acquire the lock by spin_lock)
rtsx_enter_ss
rtsx_power_off_card
xd_cleanup_work
xd_delay_write
xd_finish_write
xd_copy_page
wait_timeout
schedule_timeout --> may sleep
To fix it, "wait_timeout" is replaced with mdelay in xd_copy_page.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/staging/rts5208/xd.c | diffblobblamehistory |