From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Jiacheng Yu <yujiacheng3@huawei.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Helge Deller <deller@gmx.de>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.12.y 2/2] fbcon: Use correct type for vc_resize() return value
Date: Wed, 22 Jul 2026 10:48:42 -0400 [thread overview]
Message-ID: <20260722144842.1601797-2-sashal@kernel.org> (raw)
In-Reply-To: <20260722144842.1601797-1-sashal@kernel.org>
From: Jiacheng Yu <yujiacheng3@huawei.com>
[ Upstream commit 84202754fb1727dc3ee87f47104e4162ecc8ba3a ]
The return value of vc_resize() is int, but fbcon_set_disp() stores it
in an unsigned long variable. While the !ret check happens to work
correctly by coincidence (negative values become large positive values),
the types should match. Use int instead.
Eliminates the following W=3 warning:
drivers/video/fbdev/core/fbcon.c: In function 'fbcon_set_disp':
drivers/video/fbdev/core/fbcon.c:1494:14: warning: implicit conversion from 'int' to 'unsigned long' [-Wconversion]
Fixes: af0db3c1f898 ("fbdev: Fix vmalloc out-of-bounds write in fast_imageblit")
Cc: stable@vger.kernel.org # v6.17+
Signed-off-by: Jiacheng Yu <yujiacheng3@huawei.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/video/fbdev/core/fbcon.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 63584355367776..8dc39280580819 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -1365,8 +1365,7 @@ static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
struct vc_data **default_mode, *vc;
struct vc_data *svc;
struct fbcon_par *par = info->fbcon_par;
- int rows, cols;
- unsigned long ret = 0;
+ int rows, cols, ret;
p = &fb_display[unit];
--
2.53.0
prev parent reply other threads:[~2026-07-22 14:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-20 9:56 FAILED: patch "[PATCH] fbcon: Use correct type for vc_resize() return value" failed to apply to 6.12-stable tree gregkh
2026-07-22 14:48 ` [PATCH 6.12.y 1/2] fbcon: Rename struct fbcon_ops to struct fbcon_par Sasha Levin
2026-07-22 14:48 ` Sasha Levin [this message]
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