This is a note to let you know that I've just added the patch titled
drm/i915: use in_interrupt() not in_irq() to check context
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-use-in_interrupt-not-in_irq-to-check-context.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6c51d46f135b00c00373fcd029786ccef2b02b5b Mon Sep 17 00:00:00 2001
From: Dave Gordon <david.s.gordon@xxxxxxxxx>
Date: Fri, 6 Mar 2015 15:34:26 +0000
Subject: drm/i915: use in_interrupt() not in_irq() to check context
From: Dave Gordon <david.s.gordon@xxxxxxxxx>
commit 6c51d46f135b00c00373fcd029786ccef2b02b5b upstream.
The kernel in_irq() function tests for hard-IRQ context only, so if a
system is run with the kernel 'threadirqs' option selected, the test in
intel_check_page_flip() generates lots of warnings, because then it gets
called in soft-IRQ context.
We can instead use in_interrupt() which allows for either type of
interrupt, while still detecting and complaining about misuse of the
page flip code if it is ever called from non-interrupt context.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89321
Signed-off-by: Dave Gordon <david.s.gordon@xxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9702,7 +9702,7 @@ void intel_check_page_flip(struct drm_de
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- WARN_ON(!in_irq());
+ WARN_ON(!in_interrupt());
if (crtc == NULL)
return;
Patches currently in stable-queue which might be from david.s.gordon@xxxxxxxxx are
queue-3.19/drm-i915-use-in_interrupt-not-in_irq-to-check-context.patch
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