From bdcc031bc7c2d0f1986237c8cea6871cfebf0853 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 20 Aug 2013 18:51:08 -0400 Subject: [PATCH] drm/radeonn: gcc fixes for rv7xx/eg/btc dpm Newer versions of gcc seem to wander off into the weeds when dealing with variable sizes arrays in structs. Rather than indexing the arrays, use pointer arithmetic. See bugs: 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 --- drivers/gpu/drm/radeon/rv770_dpm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c index 44c1e782a696..8cbb85dae5aa 100644 --- a/drivers/gpu/drm/radeon/rv770_dpm.c +++ b/drivers/gpu/drm/radeon/rv770_dpm.c @@ -2294,6 +2294,7 @@ int rv7xx_parse_power_table(struct radeon_device *rdev) (power_state->v1.ucNonClockStateIndex * power_info->pplib.ucNonClockSize)); if (power_info->pplib.ucStateEntrySize - 1) { + u8 *idx; ps = kzalloc(sizeof(struct rv7xx_ps), GFP_KERNEL); if (ps == NULL) { kfree(rdev->pm.dpm.ps); @@ -2303,12 +2304,12 @@ int rv7xx_parse_power_table(struct radeon_device *rdev) rv7xx_parse_pplib_non_clock_info(rdev, &rdev->pm.dpm.ps[i], non_clock_info, power_info->pplib.ucNonClockSize); + idx = (u8 *)&power_state->v1.ucClockStateIndices[0]; for (j = 0; j < (power_info->pplib.ucStateEntrySize - 1); j++) { clock_info = (union pplib_clock_info *) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usClockInfoArrayOffset) + - (power_state->v1.ucClockStateIndices[j] * - power_info->pplib.ucClockInfoSize)); + (idx[j] * power_info->pplib.ucClockInfoSize)); rv7xx_parse_pplib_clock_info(rdev, &rdev->pm.dpm.ps[i], j, clock_info); -- 2.30.2