amba-clcd: fix cmap memory leaks
- fix cmap leak in removal path
- fix cmap leak when register_framebuffer fails
Signed-off-by: Andres Salomon <dilinger@debian.org>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 4e046fe..61050ab 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -408,7 +408,9 @@
/*
* Allocate colourmap.
*/
- fb_alloc_cmap(&fb->fb.cmap, 256, 0);
+ ret = fb_alloc_cmap(&fb->fb.cmap, 256, 0);
+ if (ret)
+ goto unmap;
/*
* Ensure interrupts are disabled.
@@ -426,6 +428,8 @@
printk(KERN_ERR "CLCD: cannot register framebuffer (%d)\n", ret);
+ fb_dealloc_cmap(&fb->fb.cmap);
+ unmap:
iounmap(fb->regs);
free_clk:
clk_put(fb->clk);
@@ -485,6 +489,8 @@
clcdfb_disable(fb);
unregister_framebuffer(&fb->fb);
+ if (fb->fb.cmap.len)
+ fb_dealloc_cmap(&fb->fb.cmap);
iounmap(fb->regs);
clk_put(fb->clk);