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| author | Alex Deucher <alexander.deucher@amd.com> | 2013-07-17 10:52:43 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-07-17 14:52:48 -0400 |
| commit | 77c7d50a4a9f1fa3aa42adad00e7b44aa70ec910 (patch) | |
| tree | ebe496453b1b7d76b1a2ed61ffefa95379f7aa81 | |
| parent | 1fa4252af760560f77ca3d5d360fd62df3292c7f (diff) | |
| download | virtio-console-77c7d50a4a9f1fa3aa42adad00e7b44aa70ec910.tar.gz | |
drm/radeon/dpm: fix atom vram table parsing
Parsing the table in incorrectly led to problems with
certain asics with mclk switching.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_atombios.c | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 0c3455a7399245..a2e324188bc961 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -3513,7 +3513,6 @@ int radeon_atom_get_memory_info(struct radeon_device *rdev, u8 frev, crev, i; u16 data_offset, size; union vram_info *vram_info; - u8 *p; memset(mem_info, 0, sizeof(struct atom_memory_info)); @@ -3529,13 +3528,12 @@ int radeon_atom_get_memory_info(struct radeon_device *rdev, if (module_index < vram_info->v1_3.ucNumOfVRAMModule) { ATOM_VRAM_MODULE_V3 *vram_module = (ATOM_VRAM_MODULE_V3 *)vram_info->v1_3.aVramInfo; - p = (u8 *)vram_info->v1_3.aVramInfo; for (i = 0; i < module_index; i++) { - vram_module = (ATOM_VRAM_MODULE_V3 *)p; if (le16_to_cpu(vram_module->usSize) == 0) return -EINVAL; - p += le16_to_cpu(vram_module->usSize); + vram_module = (ATOM_VRAM_MODULE_V3 *) + ((u8 *)vram_module + le16_to_cpu(vram_module->usSize)); } mem_info->mem_vendor = vram_module->asMemory.ucMemoryVenderID & 0xf; mem_info->mem_type = vram_module->asMemory.ucMemoryType & 0xf0; @@ -3547,13 +3545,12 @@ int radeon_atom_get_memory_info(struct radeon_device *rdev, if (module_index < vram_info->v1_4.ucNumOfVRAMModule) { ATOM_VRAM_MODULE_V4 *vram_module = (ATOM_VRAM_MODULE_V4 *)vram_info->v1_4.aVramInfo; - p = (u8 *)vram_info->v1_4.aVramInfo; for (i = 0; i < module_index; i++) { - vram_module = (ATOM_VRAM_MODULE_V4 *)p; if (le16_to_cpu(vram_module->usModuleSize) == 0) return -EINVAL; - p += le16_to_cpu(vram_module->usModuleSize); + vram_module = (ATOM_VRAM_MODULE_V4 *) + ((u8 *)vram_module + le16_to_cpu(vram_module->usModuleSize)); } mem_info->mem_vendor = vram_module->ucMemoryVenderID & 0xf; mem_info->mem_type = vram_module->ucMemoryType & 0xf0; @@ -3572,13 +3569,12 @@ int radeon_atom_get_memory_info(struct radeon_device *rdev, if (module_index < vram_info->v2_1.ucNumOfVRAMModule) { ATOM_VRAM_MODULE_V7 *vram_module = (ATOM_VRAM_MODULE_V7 *)vram_info->v2_1.aVramInfo; - p = (u8 *)vram_info->v2_1.aVramInfo; for (i = 0; i < module_index; i++) { - vram_module = (ATOM_VRAM_MODULE_V7 *)p; if (le16_to_cpu(vram_module->usModuleSize) == 0) return -EINVAL; - p += le16_to_cpu(vram_module->usModuleSize); + vram_module = (ATOM_VRAM_MODULE_V7 *) + ((u8 *)vram_module + le16_to_cpu(vram_module->usModuleSize)); } mem_info->mem_vendor = vram_module->ucMemoryVenderID & 0xf; mem_info->mem_type = vram_module->ucMemoryType & 0xf0; @@ -3628,21 +3624,19 @@ int radeon_atom_get_mclk_range_table(struct radeon_device *rdev, if (module_index < vram_info->v1_4.ucNumOfVRAMModule) { ATOM_VRAM_MODULE_V4 *vram_module = (ATOM_VRAM_MODULE_V4 *)vram_info->v1_4.aVramInfo; - ATOM_MEMORY_TIMING_FORMAT *format; - p = (u8 *)vram_info->v1_4.aVramInfo; for (i = 0; i < module_index; i++) { - vram_module = (ATOM_VRAM_MODULE_V4 *)p; if (le16_to_cpu(vram_module->usModuleSize) == 0) return -EINVAL; - p += le16_to_cpu(vram_module->usModuleSize); + vram_module = (ATOM_VRAM_MODULE_V4 *) + ((u8 *)vram_module + le16_to_cpu(vram_module->usModuleSize)); } mclk_range_table->num_entries = (u8) ((le16_to_cpu(vram_module->usModuleSize) - offsetof(ATOM_VRAM_MODULE_V4, asMemTiming)) / mem_timing_size); - p = (u8 *)vram_module->asMemTiming; + p = (u8 *)&vram_module->asMemTiming[0]; for (i = 0; i < mclk_range_table->num_entries; i++) { - format = (ATOM_MEMORY_TIMING_FORMAT *)p; + ATOM_MEMORY_TIMING_FORMAT *format = (ATOM_MEMORY_TIMING_FORMAT *)p; mclk_range_table->mclk[i] = le32_to_cpu(format->ulClkRange); p += mem_timing_size; } |