The changeset fixes an oops, if pwm device was allocated by calling legacy API and not deregistered appropriately on removal:
% dmesg | grep -i pwm pwm-backlight backlight.19: unable to request PWM, trying legacy API % rmmod pwm_bl % cat /sys/kernel/debug/pwm Unable to handle kernel paging request at virtual address 7f0c18cc pgd = ace18000 [7f0c18cc] *pgd=3c5eb811, *pte=00000000, *ppte=00000000 Internal error: Oops: 7 [#1] PREEMPT SMP ARM ...... Vladimir Zapolskiy (2): backlight: pwm: don't call legacy pwm request for device defined in dt backlight: pwm: clean up pwm requested using legacy API drivers/video/backlight/pwm_bl.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
