linux-kernel - [PATCH 1/1] drm/vkms: check plane_composer->map[0] before using it

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Date:   Mon, 11 Apr 2022 20:38:01 -0300
From:   Tales Lelo da Aparecida <tales.aparecida@...il.com>
To:     Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>,
        Melissa Wen <melissa.srw@...il.com>,
        Haneen Mohammed <hamohammed.sa@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        andrealmeid@...eup.net
Cc:     Tales Lelo da Aparecida <tales.aparecida@...il.com>
Subject: [PATCH 1/1] drm/vkms: check plane_composer->map[0] before using it

Fix a copypasta error, which resulted in checking repeatedly if the
primary_composer->map[0] was null, instead of checking each
plane_composer while composing planes.

Signed-off-by: Tales Lelo da Aparecida <tales.aparecida@...il.com>
---
 drivers/gpu/drm/vkms/vkms_composer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c
index c6a1036bf2ea..b47ac170108c 100644
--- a/drivers/gpu/drm/vkms/vkms_composer.c
+++ b/drivers/gpu/drm/vkms/vkms_composer.c
@@ -157,7 +157,7 @@ static void compose_plane(struct vkms_composer *primary_composer,
 	void *vaddr;
 	void (*pixel_blend)(const u8 *p_src, u8 *p_dst);
 
-	if (WARN_ON(iosys_map_is_null(&primary_composer->map[0])))
+	if (WARN_ON(iosys_map_is_null(&plane_composer->map[0])))
 		return;
 
 	vaddr = plane_composer->map[0].vaddr;
-- 
2.35.1