diff options
| author | Michel Dänzer <michel.daenzer@amd.com> | 2012-01-05 18:42:17 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-01-06 09:40:00 +0000 |
| commit | 3df96909b75835d487a9178761622b0cbd7310d4 (patch) | |
| tree | 5dab156e43a91bde13166621b26346c1efb5fc02 /drivers/gpu/drm/radeon/rs600.c | |
| parent | dea7e0ac45fd28f90bbc38ff226d36a9f788efbf (diff) | |
| download | linux-stable-3df96909b75835d487a9178761622b0cbd7310d4.tar.gz linux-stable-3df96909b75835d487a9178761622b0cbd7310d4.tar.bz2 linux-stable-3df96909b75835d487a9178761622b0cbd7310d4.zip | |
radeon: Fix disabling PCI bus mastering on big endian hosts.
It would previously write basically random bits to PCI configuration space...
Not very surprising that the GPU tended to stop responding completely. The
resulting MCE even froze the whole machine sometimes.
Now resetting the GPU after a lockup has at least a fighting chance of
succeeding.
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/rs600.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/rs600.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index ca6d5b6eaaac..803e0d3c1773 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -324,10 +324,10 @@ void rs600_hpd_fini(struct radeon_device *rdev) void rs600_bm_disable(struct radeon_device *rdev) { - u32 tmp; + u16 tmp; /* disable bus mastering */ - pci_read_config_word(rdev->pdev, 0x4, (u16*)&tmp); + pci_read_config_word(rdev->pdev, 0x4, &tmp); pci_write_config_word(rdev->pdev, 0x4, tmp & 0xFFFB); mdelay(1); } |