Not all possible format conversions are supported yet. Print a
warning on unsupported combinations.
Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
---
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);
--
2.35.1
