diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0594-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0594-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0594-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch b/target/linux/bcm27xx/patches-5.4/950-0594-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch new file mode 100644 index 0000000000..3f0aa4aa02 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0594-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch @@ -0,0 +1,39 @@ +From 60ef8af4bc2d5f8643adbcb69bb1f52e491a96ae Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Mon, 27 Jan 2020 10:22:44 +0000 +Subject: [PATCH] drm: Checking of the pitch is only valid for linear + formats + +framebuffer_check was computing a minimum pitch value and ensuring +that the provided value was greater than this. +That check is only valid if the format is linear. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/gpu/drm/drm_framebuffer.c | 16 ++++++++++------ + 1 file changed, 10 insertions(+), 6 deletions(-) + +--- a/drivers/gpu/drm/drm_framebuffer.c ++++ b/drivers/gpu/drm/drm_framebuffer.c +@@ -217,12 +217,16 @@ static int framebuffer_check(struct drm_ + if (min_pitch > UINT_MAX) + return -ERANGE; + +- if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) +- return -ERANGE; ++ if (r->modifier[i] == DRM_FORMAT_MOD_LINEAR) { ++ if ((uint64_t)height * r->pitches[i] + r->offsets[i] > ++ UINT_MAX) ++ return -ERANGE; + +- if (block_size && r->pitches[i] < min_pitch) { +- DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); +- return -EINVAL; ++ if (block_size && r->pitches[i] < min_pitch) { ++ DRM_DEBUG_KMS("bad pitch %u for plane %d\n", ++ r->pitches[i], i); ++ return -EINVAL; ++ } + } + + if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) { |