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drm/radeon/dpm/atom: restructure logic to work around a compiler bug 

It seems gcc 4.8.1 generates bogus code for the old logic causing
part of the function to get skipped.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=66932
https://bugs.freedesktop.org/show_bug.cgi?id=66972
https://bugs.freedesktop.org/show_bug.cgi?id=66945

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andre Heider 2013-07-17 14:02:23 -04:00 committed by Alex Deucher
parent 77c7d50a4a
commit 48fa04c3fc
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/radeon/radeon_atombios.c
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@ -3703,8 +3703,9 @@ int radeon_atom_init_mc_reg_table(struct radeon_device *rdev,
sizeof(ATOM_INIT_REG_INDEX_FORMAT)) - 1;
if (num_entries > VBIOS_MC_REGISTER_ARRAY_SIZE)
return -EINVAL;
while (!(reg_block->asRegIndexBuf[i].ucPreRegDataLength & ACCESS_PLACEHOLDER) &&
(i < num_entries)) {
while (i < num_entries) {
if (reg_block->asRegIndexBuf[i].ucPreRegDataLength & ACCESS_PLACEHOLDER)
break;
reg_table->mc_reg_address[i].s1 =
(u16)(le16_to_cpu(reg_block->asRegIndexBuf[i].usRegIndex));
reg_table->mc_reg_address[i].pre_reg_data =