From b66d18ddb16603d1e1ec39cb2ff3abf3fd212180 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Fri, 15 May 2009 14:11:48 -0700 Subject: [PATCH] drm/i915: avoid non-atomic sysrq execution The sysrq functions are executed in hardirq context, so we shouldn't be calling sleeping functions from them, like mutex_locks or memory allocations. Fix up the i915 sysrq handler to avoid this. Signed-off-by: Jesse Barnes Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_fb.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index e4652dcdd9bb..7a66b91ccf42 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -857,9 +857,15 @@ void intelfb_restore(void) drm_crtc_helper_set_config(&kernelfb_mode); } +static void intelfb_restore_work_fn(struct work_struct *ignored) +{ + intelfb_restore(); +} +static DECLARE_WORK(intelfb_restore_work, intelfb_restore_work_fn); + static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3) { - intelfb_restore(); + schedule_work(&intelfb_restore_work); } static struct sysrq_key_op sysrq_intelfb_restore_op = { -- 2.34.1