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 <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index 7a60689..dd2a07c4 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -4931,6 +4931,7 @@
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 @@
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);