Bug#596741: regression: CPU fan fast after resume: won't climb back down (patch from upstream)
tags 596741 = upstream patch moreinfo
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Hi Jon,
Jon Dowland wrote:
> I'm happy to: but after a few hours I've totally failed to build the squeeze
> kernel for various reasons, the last attempt (in a pbuilder) without any clear
> idea why it failed.
Sorry for the trouble. Building the full kernel package is generally not a
great idea, since it is enormous. Building just one variant of the kernel
works better, as described at [1].
Even easier is testing using the upstream source. It works like this:
0. Prerequisites:
apt-get install git build-essential
1. Get a copy of the kernel history if you don't already have it:
git clone \
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
2. Fetch point release (KMS variant):
cd linux
git remote add squeeze-drm \
git://git.kernel.org/pub/scm/linux/kernel/git/smb/linux-2.6.32.y-drm33.z.git
git fetch squeeze-drm
3. Configure, build, and test:
git checkout squeeze-drm/master
cp /boot/config-2.6.32-5-* .config; # stock configuration
scripts/config --disable DEBUG_INFO
make localmodconfig; # optional: minimize configuration
make deb-pkg; # optionally with -j<num> for parallel build
dpkg -i ../<name of package>; # as root
Hopefully it reproduces the problem. So:
4. Test the patch:
cd linux
git am -3sc /path/to/the/patch
make deb-pkg; # maybe with -j4
dpkg -i ../<name of package>
reboot
Patch attached.
Hope that helps,
Jonathan
[1] http://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official
or the corresponding page in the debian-kernel-handbook package
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 29 Mar 2012 19:04:08 -0400
Subject: drm/radeon/kms: fix fans after resume
commit 402976fe51b2d1a58a29ba06fa1ca5ace3a4cdcd upstream.
On pre-R600 asics, the SpeedFanControl table is not
executed as part of ASIC_Init as it is on newer asics.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=29412
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
drivers/gpu/drm/radeon/atom.c | 9 +++++++++
drivers/gpu/drm/radeon/atom.h | 1 +
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index 052312f5ff97..0272ea8bd6cf 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -31,6 +31,7 @@
#include "atom.h"
#include "atom-names.h"
#include "atom-bits.h"
+#include "radeon.h"
#define ATOM_COND_ABOVE 0
#define ATOM_COND_ABOVEOREQUAL 1
@@ -1247,8 +1248,10 @@ struct atom_context *atom_parse(struct card_info *card, void *bios)
int atom_asic_init(struct atom_context *ctx)
{
+ struct radeon_device *rdev = ctx->card->dev->dev_private;
int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
uint32_t ps[16];
+
memset(ps, 0, 64);
ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
@@ -1260,6 +1263,12 @@ int atom_asic_init(struct atom_context *ctx)
return 1;
atom_execute_table(ctx, ATOM_CMD_INIT, ps);
+ memset(ps, 0, 64);
+
+ if (rdev->family < CHIP_R600) {
+ if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL))
+ atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps);
+ }
return 0;
}
diff --git a/drivers/gpu/drm/radeon/atom.h b/drivers/gpu/drm/radeon/atom.h
index bc73781423a1..d3b7c967e44e 100644
--- a/drivers/gpu/drm/radeon/atom.h
+++ b/drivers/gpu/drm/radeon/atom.h
@@ -44,6 +44,7 @@
#define ATOM_CMD_SETSCLK 0x0A
#define ATOM_CMD_SETMCLK 0x0B
#define ATOM_CMD_SETPCLK 0x0C
+#define ATOM_CMD_SPDFANCNTL 0x39
#define ATOM_DATA_FWI_PTR 0xC
#define ATOM_DATA_IIO_PTR 0x32
--
1.7.10
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