This is a note to let you know that I've just added the patch titled
drm/radeon: do a posting read in r100_set_irq
to the 3.10-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-radeon-do-a-posting-read-in-r100_set_irq.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f957063fee6392bb9365370db6db74dc0b2dce0a Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Mon, 2 Mar 2015 20:36:26 -0500
Subject: drm/radeon: do a posting read in r100_set_irq
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit f957063fee6392bb9365370db6db74dc0b2dce0a upstream.
To make sure the writes go through the pci bridge.
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=90741
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/r100.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -743,6 +743,10 @@ int r100_irq_set(struct radeon_device *r
tmp |= RADEON_FP2_DETECT_MASK;
}
WREG32(RADEON_GEN_INT_CNTL, tmp);
+
+ /* read back to post the write */
+ RREG32(RADEON_GEN_INT_CNTL);
+
return 0;
}
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-3.10/drm-radeon-fix-drm_ioctl_radeon_cs-oops.patch
queue-3.10/drm-radeon-do-a-posting-read-in-r100_set_irq.patch
queue-3.10/drm-radeon-do-a-posting-read-in-evergreen_set_irq.patch
queue-3.10/drm-radeon-do-a-posting-read-in-r600_set_irq.patch
queue-3.10/drm-radeon-do-a-posting-read-in-rs600_set_irq.patch
queue-3.10/drm-radeon-drop-setting-upll-to-sleep-mode.patch
queue-3.10/drm-radeon-do-a-posting-read-in-si_set_irq.patch
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