[PATCH v2 1/3] drm/format-helper: Print warning on missing format conversion
Thomas Zimmermann
tzimmermann at suse.de
Mon Apr 25 07:59:37 UTC 2022
Not all possible format conversions are supported yet. Print a
warning on unsupported combinations.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>
---
drivers/gpu/drm/drm_format_helper.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 0e7135114728..b648f29b21b6 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -590,6 +590,9 @@ int drm_fb_blit_toio(void __iomem *dst, unsigned int dst_pitch, uint32_t dst_for
}
}
+ drm_warn_once(fb->dev, "No conversion helper from %p4cc to %p4cc found.\n",
+ &fb_format, &dst_format);
+
return -EINVAL;
}
EXPORT_SYMBOL(drm_fb_blit_toio);
--
2.36.0
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