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Commit 48fa04c3 authored by Andre Heider's avatar Andre Heider Committed by Alex Deucher
Browse files

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: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 77c7d50a

drivers/gpu/drm/radeon/radeon_atombios.c

+3 −2
Original line number Diff line number Diff line
@@ -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 =