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| author | Seung-Woo Kim <sw0312.kim@samsung.com> | 2013-01-10 14:35:06 +0400 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2013-01-25 09:38:43 +0400 |
| commit | e7808df1af8801cf4f2ac16be25db1b079b5da4c (patch) | |
| tree | 3f3e9c62c33410b65ad0b3e65e107e612a453063 /drivers/gpu | |
| parent | 9c08e4ba81a73862e15b3eb4e6ae2e11aaf4151b (diff) | |
| download | linux-e7808df1af8801cf4f2ac16be25db1b079b5da4c.tar.xz | |
drm/exynos: added validation of edid for vidi connection
If edid of vidi from user is invalid, size calculated from a number
of cea extensions can be wrong. So, validation should be checked.
Changelog v2:
- just code cleanup
. declare raw_edid only if vidi->connection is enabled.
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_vidi.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c index 6d91000c56f9..13ccbd4bcfaa 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c @@ -521,7 +521,6 @@ int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, struct exynos_drm_manager *manager; struct exynos_drm_display_ops *display_ops; struct drm_exynos_vidi_connection *vidi = data; - struct edid *raw_edid; int edid_len; DRM_DEBUG_KMS("%s\n", __FILE__); @@ -558,11 +557,11 @@ int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, } if (vidi->connection) { - if (!vidi->edid) { - DRM_DEBUG_KMS("edid data is null.\n"); + struct edid *raw_edid = (struct edid *)(uint32_t)vidi->edid; + if (!drm_edid_is_valid(raw_edid)) { + DRM_DEBUG_KMS("edid data is invalid.\n"); return -EINVAL; } - raw_edid = (struct edid *)(uint32_t)vidi->edid; edid_len = (1 + raw_edid->extensions) * EDID_LENGTH; ctx->raw_edid = kzalloc(edid_len, GFP_KERNEL); if (!ctx->raw_edid) { |