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| author | Arvind Yadav <arvind.yadav.cs@gmail.com> | 2016-12-13 13:50:52 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-06 18:59:48 -0700 |
| commit | a417ea5b9d22dc5733f6fac5cee72735cb7f8d99 (patch) | |
| tree | 19970269da2daeccfeccc02a9a605c5f913c8271 | |
| parent | ddc0ec3be8077a689e0136c873519bf851a741e6 (diff) | |
| download | linux-stable-a417ea5b9d22dc5733f6fac5cee72735cb7f8d99.tar.gz linux-stable-a417ea5b9d22dc5733f6fac5cee72735cb7f8d99.tar.bz2 linux-stable-a417ea5b9d22dc5733f6fac5cee72735cb7f8d99.zip | |
video: fbdev: cobalt_lcdfb: Handle return NULL error from devm_ioremap
[ Upstream commit 4dcd19bfabaee8f9f4bcf203afba09b98ccbaf76 ]
Here, If devm_ioremap will fail. It will return NULL.
Kernel can run into a NULL-pointer dereference.
This error check will avoid NULL pointer dereference.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/video/fbdev/cobalt_lcdfb.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/video/fbdev/cobalt_lcdfb.c b/drivers/video/fbdev/cobalt_lcdfb.c index 2d3b691f3fc4..038ac6934fe9 100644 --- a/drivers/video/fbdev/cobalt_lcdfb.c +++ b/drivers/video/fbdev/cobalt_lcdfb.c @@ -308,6 +308,11 @@ static int cobalt_lcdfb_probe(struct platform_device *dev) info->screen_size = resource_size(res); info->screen_base = devm_ioremap(&dev->dev, res->start, info->screen_size); + if (!info->screen_base) { + framebuffer_release(info); + return -ENOMEM; + } + info->fbops = &cobalt_lcd_fbops; info->fix = cobalt_lcdfb_fix; info->fix.smem_start = res->start; |