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| author |   Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-03-13 18:20:50 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2020-03-18 17:52:36 +0200 |
| commit | ea0aa608a8e89f112761d6f91733f27513d2b657 (patch) | |
| tree | d4f5541030ea4e9581c435ea2ad8081551ce43ed /drivers/gpu/drm/drm_edid.c | |
| parent | drm/edid: Return DispID length from drm_find_displayid_extension() (diff) | |
| download | linux-dev-ea0aa608a8e89f112761d6f91733f27513d2b657.tar.xz linux-dev-ea0aa608a8e89f112761d6f91733f27513d2b657.zip | |
drm/edid: Move validate_displayid() drm_find_displayid_extension()
Instead of everyone having to call validate_displayid() let's just
have drm_find_displayid_extension() do it for them.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200313162054.16009-6-ville.syrjala@linux.intel.com
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index d783c5f958b3..2b8e22cc1407 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3216,6 +3216,7 @@ static u8 *drm_find_displayid_extension(const struct edid *edid, int *length, int *idx) { u8 *displayid = drm_find_edid_extension(edid, DISPLAYID_EXT); + int ret; if (!displayid) return NULL; @@ -3223,12 +3224,15 @@ static u8 *drm_find_displayid_extension(const struct edid *edid, *length = EDID_LENGTH; *idx = 1; + ret = validate_displayid(displayid, *length, *idx); + if (ret) + return NULL; + return displayid; } static u8 *drm_find_cea_extension(const struct edid *edid) { - int ret; int length, idx; struct displayid_block *block; u8 *cea; @@ -3244,10 +3248,6 @@ static u8 *drm_find_cea_extension(const struct edid *edid) if (!displayid) return NULL; - ret = validate_displayid(displayid, length, idx); - if (ret) - return NULL; - idx += sizeof(struct displayid_hdr); for_each_displayid_db(displayid, block, idx, length) { if (block->tag == DATA_BLOCK_CTA) { @@ -5188,7 +5188,6 @@ static int add_displayid_detailed_modes(struct drm_connector *connector, struct edid *edid) { u8 *displayid; - int ret; int length, idx; struct displayid_block *block; int num_modes = 0; @@ -5197,10 +5196,6 @@ static int add_displayid_detailed_modes(struct drm_connector *connector, if (!displayid) return 0; - ret = validate_displayid(displayid, length, idx); - if (ret) - return 0; - idx += sizeof(struct displayid_hdr); for_each_displayid_db(displayid, block, idx, length) { switch (block->tag) { @@ -5848,10 +5843,6 @@ static int drm_parse_display_id(struct drm_connector *connector, struct displayid_block *block; int ret; - ret = validate_displayid(displayid, length, idx); - if (ret) - return ret; - idx += sizeof(struct displayid_hdr); for_each_displayid_db(displayid, block, idx, length) { DRM_DEBUG_KMS("block id 0x%x, rev %d, len %d\n", |