2022-04-07 20:41:15

by Saurabh Singh Sengar

[permalink] [raw]
Subject: [PATCH v2] drm/hyperv: Added error message for fb size greater then allocated

Added error message when the size of requested framebuffer is more then
the allocated size by vmbus mmio region for framebuffer

Signed-off-by: Saurabh Sengar <[email protected]>
---
v1 -> v2 : Corrected Sign-off

drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
index e82b815..92587f0 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
@@ -123,8 +123,11 @@ static int hyperv_pipe_check(struct drm_simple_display_pipe *pipe,
if (fb->format->format != DRM_FORMAT_XRGB8888)
return -EINVAL;

- if (fb->pitches[0] * fb->height > hv->fb_size)
+ if (fb->pitches[0] * fb->height > hv->fb_size) {
+ drm_err(&hv->dev, "hv->hdev, fb size requested by process %s for %d X %d (pitch %d) is greater then allocated size %ld\n",
+ current->comm, fb->width, fb->height, fb->pitches[0], hv->fb_size);
return -EINVAL;
+ }

return 0;
}
--
1.8.3.1