path: root/drivers/gpu
diff options
authorIgor Murzov <>2012-01-22 18:47:28 +0400
committerDave Airlie <>2012-01-24 17:34:32 +0000
commit211fa4fc4e13492151e698d92b0dff56b29928ec (patch)
tree2c2d74ce407bcb26a1b30beb9a95d903b3a912e2 /drivers/gpu
parenta3f83ab1a717c0e6c2f59a4cfdaa10707cc35c55 (diff)
drm/radeon: finish getting bios earlier
Return a number of bytes read in radeon_atrm_get_bios_chunk() and properly check this value in radeon_atrm_get_bios(). If radeon_atrm_get_bios_chunk() read less bytes then were requested, it means that it finished reading bios data. Prior to this patch, condition in radeon_atrm_get_bios() was always equivalent to "if (ATRM_BIOS_PAGE <= 0)", so it was always false, thus radeon_atrm_get_bios() was trying to read past the bios data wasting boot time. On my lenovo ideapad u455 laptop this patch drops bios reading time from ~5.5s to ~1.5s. Signed-off-by: Igor Murzov <> Reviewed-by: Alex Deucher <> Signed-off-by: Dave Airlie <>
Diffstat (limited to 'drivers/gpu')
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
index c666a5b5e505..13ac63ba6075 100644
--- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c
+++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c
@@ -60,7 +60,7 @@ static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
obj = (union acpi_object *)buffer.pointer;
memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
- return len;
+ return obj->buffer.length;
bool radeon_atrm_supported(struct pci_dev *pdev)
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 229a20f10e2b..501f4881e5aa 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -120,7 +120,7 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
ret = radeon_atrm_get_bios_chunk(rdev->bios,
- if (ret <= 0)
+ if (ret < ATRM_BIOS_PAGE)