From: Alex Deucher Date: Tue, 20 Aug 2013 23:08:22 +0000 (-0400) Subject: drm/radeon: gcc fixes for ci dpm X-Git-Tag: v5.15~19428^2~13^2~4 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=b309ed98672705729bce271efb60f530290bbffd;p=mirror_ubuntu-kernels.git drm/radeon: gcc fixes for ci 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 --- diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c index 7a6068968b70..dd2a07c44c3a 100644 --- a/drivers/gpu/drm/radeon/ci_dpm.c +++ b/drivers/gpu/drm/radeon/ci_dpm.c @@ -4931,6 +4931,7 @@ static int ci_parse_power_table(struct radeon_device *rdev) rdev->pm.dpm.backbias_response_time = le16_to_cpu(power_info->pplib.usBackbiasTime); rdev->pm.dpm.voltage_response_time = le16_to_cpu(power_info->pplib.usVoltageTime); for (i = 0; i < state_array->ucNumEntries; i++) { + u8 *idx; power_state = (union pplib_power_state *)power_state_offset; non_clock_array_index = power_state->v2.nonClockInfoIndex; non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *) @@ -4947,14 +4948,16 @@ static int ci_parse_power_table(struct radeon_device *rdev) non_clock_info, non_clock_info_array->ucEntrySize); k = 0; + idx = (u8 *)&power_state->v2.clockInfoIndex[0]; for (j = 0; j < power_state->v2.ucNumDPMLevels; j++) { - clock_array_index = power_state->v2.clockInfoIndex[j]; + clock_array_index = idx[j]; if (clock_array_index >= clock_info_array->ucNumEntries) continue; if (k >= CISLANDS_MAX_HARDWARE_POWERLEVELS) break; clock_info = (union pplib_clock_info *) - &clock_info_array->clockInfo[clock_array_index * clock_info_array->ucEntrySize]; + ((u8 *)&clock_info_array->clockInfo[0] + + (clock_array_index * clock_info_array->ucEntrySize)); ci_parse_pplib_clock_info(rdev, &rdev->pm.dpm.ps[i], k, clock_info);