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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2017-05-02 13:47:53 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2017-05-02 13:47:53 +0200 |
| commit | dc85e9a87420613b3129d5cc5ecd79c58351c546 (patch) | |
| tree | 74ef6a2b546bb5fd315c260c2b41764daebbfaa1 | |
| parent | 45f580c42e5c125d55dbd8099750a1998de3d917 (diff) | |
| download | linux-dc85e9a87420613b3129d5cc5ecd79c58351c546.tar.bz2 | |
sm501fb: don't return zero on failure path in sm501fb_start()
If fbmem iomemory mapping failed, sm501fb_start() breaks off
initialization, deallocates resources, but returns zero.
As a result, double deallocation can happen in sm501fb_stop().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
| -rw-r--r-- | drivers/video/fbdev/sm501fb.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c index d80bc8a3200f..67e314fdd947 100644 --- a/drivers/video/fbdev/sm501fb.c +++ b/drivers/video/fbdev/sm501fb.c @@ -1600,6 +1600,7 @@ static int sm501fb_start(struct sm501fb_info *info, info->fbmem = ioremap(res->start, resource_size(res)); if (info->fbmem == NULL) { dev_err(dev, "cannot remap framebuffer\n"); + ret = -ENXIO; goto err_mem_res; } |