| Message ID | 20220512115913.48685-1-linmq006@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | video: fbdev: Fix refcount leak in clcdfb_of_vram_setup | expand |
On 5/12/22 13:59, Miaoqian Lin wrote: > of_parse_phandle() returns a node pointer with refcount > incremented, we should use of_node_put() on it when not need anymore. > Add missing of_node_put() to avoid refcount leak. > > Fixes: d10715be03bd ("video: ARM CLCD: Add DT support") > Signed-off-by: Miaoqian Lin <linmq006@gmail.com> applied to the fbdev tree. Thanks! Helge > --- > drivers/video/fbdev/amba-clcd.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c > index 9ec969e136bf..8080116aea84 100644 > --- a/drivers/video/fbdev/amba-clcd.c > +++ b/drivers/video/fbdev/amba-clcd.c > @@ -758,12 +758,15 @@ static int clcdfb_of_vram_setup(struct clcd_fb *fb) > return -ENODEV; > > fb->fb.screen_base = of_iomap(memory, 0); > - if (!fb->fb.screen_base) > + if (!fb->fb.screen_base) { > + of_node_put(memory); > return -ENOMEM; > + } > > fb->fb.fix.smem_start = of_translate_address(memory, > of_get_address(memory, 0, &size, NULL)); > fb->fb.fix.smem_len = size; > + of_node_put(memory); > > return 0; > }
diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c index 9ec969e136bf..8080116aea84 100644 --- a/drivers/video/fbdev/amba-clcd.c +++ b/drivers/video/fbdev/amba-clcd.c @@ -758,12 +758,15 @@ static int clcdfb_of_vram_setup(struct clcd_fb *fb) return -ENODEV; fb->fb.screen_base = of_iomap(memory, 0); - if (!fb->fb.screen_base) + if (!fb->fb.screen_base) { + of_node_put(memory); return -ENOMEM; + } fb->fb.fix.smem_start = of_translate_address(memory, of_get_address(memory, 0, &size, NULL)); fb->fb.fix.smem_len = size; + of_node_put(memory); return 0; }
of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. Fixes: d10715be03bd ("video: ARM CLCD: Add DT support") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> --- drivers/video/fbdev/amba-clcd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)