From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 16 Jan 2014 15:53:50 +0000 (-0500)
Subject: drm/radeon: fix endian handling in radeon_atom_init_mc_reg_table
X-Git-Tag: v3.14-rc1~47^2~15^2~5
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d526fbdd0fd0e5d78cd2e01a5387ee83431da7fb;p=users%2Fjedix%2Flinux-maple.git
drm/radeon: fix endian handling in radeon_atom_init_mc_reg_table
Need to swap the data for big endian.
Notcied by sylware in IRC.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 61cff32b4012..00bca1bd5745 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -3874,16 +3874,18 @@ int radeon_atom_init_mc_reg_table(struct radeon_device *rdev,
((u8 *)format + sizeof(ATOM_INIT_REG_INDEX_FORMAT));
}
reg_table->last = i;
- while ((*(u32 *)reg_data != END_OF_REG_DATA_BLOCK) &&
+ while ((le32_to_cpu(*(u32 *)reg_data) != END_OF_REG_DATA_BLOCK) &&
(num_ranges < VBIOS_MAX_AC_TIMING_ENTRIES)) {
- t_mem_id = (u8)((*(u32 *)reg_data & MEM_ID_MASK) >> MEM_ID_SHIFT);
+ t_mem_id = (u8)((le32_to_cpu(*(u32 *)reg_data) & MEM_ID_MASK)
+ >> MEM_ID_SHIFT);
if (module_index == t_mem_id) {
reg_table->mc_reg_table_entry[num_ranges].mclk_max =
- (u32)((*(u32 *)reg_data & CLOCK_RANGE_MASK) >> CLOCK_RANGE_SHIFT);
+ (u32)((le32_to_cpu(*(u32 *)reg_data) & CLOCK_RANGE_MASK)
+ >> CLOCK_RANGE_SHIFT);
for (i = 0, j = 1; i < reg_table->last; i++) {
if ((reg_table->mc_reg_address[i].pre_reg_data & LOW_NIBBLE_MASK) == DATA_FROM_TABLE) {
reg_table->mc_reg_table_entry[num_ranges].mc_data[i] =
- (u32)*((u32 *)reg_data + j);
+ (u32)le32_to_cpu(*((u32 *)reg_data + j));
j++;
} else if ((reg_table->mc_reg_address[i].pre_reg_data & LOW_NIBBLE_MASK) == DATA_EQU_PREV) {
reg_table->mc_reg_table_entry[num_ranges].mc_data[i] =
@@ -3895,7 +3897,7 @@ int radeon_atom_init_mc_reg_table(struct radeon_device *rdev,
reg_data = (ATOM_MEMORY_SETTING_DATA_BLOCK *)
((u8 *)reg_data + le16_to_cpu(reg_block->usRegDataBlkSize));
}
- if (*(u32 *)reg_data != END_OF_REG_DATA_BLOCK)
+ if (le32_to_cpu(*(u32 *)reg_data) != END_OF_REG_DATA_BLOCK)
return -EINVAL;
reg_table->num_entries = num_ranges;
} else