mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-04-02 10:31:26 -04:00
f514248727
fsl_xcvr_activate_ctl() has lockdep_assert_held(&card->snd_card->controls_rwsem), but fsl_xcvr_mode_put() calls it without acquiring this lock. Other callers of fsl_xcvr_activate_ctl() in fsl_xcvr_startup() and fsl_xcvr_shutdown() properly acquire the lock with down_read()/up_read(). Add the missing down_read()/up_read() calls around fsl_xcvr_activate_ctl() in fsl_xcvr_mode_put() to fix the lockdep assertion and prevent potential race conditions when multiple userspace threads access the control. Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu> Link: https://patch.msgid.link/20260202174112.2018402-1-n7l8m4@u.northwestern.edu Signed-off-by: Mark Brown <broonie@kernel.org>