Commit 981dae74 authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'drm-intel-fixes-2015-08-07' of git://anongit.freedesktop.org/drm-intel

Pull drm fixes from Daniel Vetter:
 "One i915 regression fix and a drm core one since Dave's not around,
  both introduced in 4.2 so not cc: stable.

  The fix for the warning Ted reported isn't in here yet since he didn't
  yet supply a tested-by and I can't repro this one myself (it's in
  fixup code that needs firmware doing something i915 wouldn't do)"

* tag 'drm-intel-fixes-2015-08-07' of git://anongit.freedesktop.org/drm-intel:
  drm/vblank: Use u32 consistently for vblank counters
  drm/i915: Allow parsing of variable size child device entries from VBT
parents 49d7c655 209e4dbc
......@@ -75,7 +75,7 @@ module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600)
module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600);
static void store_vblank(struct drm_device *dev, int crtc,
unsigned vblank_count_inc,
u32 vblank_count_inc,
struct timeval *t_vblank)
{
struct drm_vblank_crtc *vblank = &dev->vblank[crtc];
......
......@@ -1075,6 +1075,7 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
const union child_device_config *p_child;
union child_device_config *child_dev_ptr;
int i, child_device_num, count;
u8 expected_size;
u16 block_size;
p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
......@@ -1082,8 +1083,26 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
return;
}
if (p_defs->child_dev_size < sizeof(*p_child)) {
DRM_ERROR("General definiton block child device size is too small.\n");
if (bdb->version < 195) {
expected_size = 33;
} else if (bdb->version == 195) {
expected_size = 37;
} else if (bdb->version <= 197) {
expected_size = 38;
} else {
expected_size = 38;
DRM_DEBUG_DRIVER("Expected child_device_config size for BDB version %u not known; assuming %u\n",
expected_size, bdb->version);
}
if (expected_size > sizeof(*p_child)) {
DRM_ERROR("child_device_config cannot fit in p_child\n");
return;
}
if (p_defs->child_dev_size != expected_size) {
DRM_ERROR("Size mismatch; child_device_config size=%u (expected %u); bdb->version: %u\n",
p_defs->child_dev_size, expected_size, bdb->version);
return;
}
/* get the block size of general definitions */
......@@ -1130,7 +1149,7 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
child_dev_ptr = dev_priv->vbt.child_dev + count;
count++;
memcpy(child_dev_ptr, p_child, sizeof(*p_child));
memcpy(child_dev_ptr, p_child, p_defs->child_dev_size);
}
return;
}
......
......@@ -691,7 +691,7 @@ struct drm_vblank_crtc {
struct timer_list disable_timer; /* delayed disable timer */
/* vblank counter, protected by dev->vblank_time_lock for writes */
unsigned long count;
u32 count;
/* vblank timestamps, protected by dev->vblank_time_lock for writes */
struct timeval time[DRM_VBLANKTIME_RBSIZE];
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment