From 7e553e2ab79a13511bb84559287c06db80a461b1 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Mon, 25 Apr 2022 09:59:37 +0200 Subject: [PATCH] drm/format-helper: Print warning on missing format conversion Not all possible format conversions are supported yet. Print a warning on unsupported combinations. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20220425075939.30450-2-tzimmermann@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); -- 2.34.1