From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Tue, 13 Jun 2023 11:06:49 +0000 (+0200)
Subject: fbdev/ep93xx-fb: Do not assign to struct fb_info.dev
X-Git-Tag: v6.6.7~1918^2~23^2~103
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f90a0e5265b60cdd3c77990e8105f79aa2fac994;p=platform%2Fkernel%2Flinux-starfive.git

fbdev/ep93xx-fb: Do not assign to struct fb_info.dev

Do not assing the Linux device to struct fb_info.dev. The call to
register_framebuffer() initializes the field to the fbdev device.
Drivers should not override its value.

Fixes a bug where the driver incorrectly decreases the hardware
device's reference counter and leaks the fbdev device.

v2:
	* add Fixes tag (Dan)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 88017bda96a5 ("ep93xx video driver")
Cc: <stable@vger.kernel.org> # v2.6.32+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-15-tzimmermann@suse.de
---

diff --git a/drivers/video/fbdev/ep93xx-fb.c b/drivers/video/fbdev/ep93xx-fb.c
index f6cd200fe50f..37309f9dbe82 100644
--- a/drivers/video/fbdev/ep93xx-fb.c
+++ b/drivers/video/fbdev/ep93xx-fb.c
@@ -474,7 +474,6 @@ static int ep93xxfb_probe(struct platform_device *pdev)
 	if (!info)
 		return -ENOMEM;
 
-	info->dev = &pdev->dev;
 	platform_set_drvdata(pdev, info);
 	fbi = info->par;
 	fbi->mach_info = mach_info;