aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/video/fbcmap.c28
-rw-r--r--include/linux/fb.h1
2 files changed, 21 insertions, 8 deletions
diff --git a/drivers/video/fbcmap.c b/drivers/video/fbcmap.c
index a79b9762901..affdf3e32cf 100644
--- a/drivers/video/fbcmap.c
+++ b/drivers/video/fbcmap.c
@@ -88,26 +88,27 @@ static const struct fb_cmap default_16_colors = {
*
*/
-int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp)
+int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags)
{
int size = len * sizeof(u16);
+ int ret = -ENOMEM;
if (cmap->len != len) {
fb_dealloc_cmap(cmap);
if (!len)
return 0;
- cmap->red = kmalloc(size, GFP_ATOMIC);
+ cmap->red = kmalloc(size, flags);
if (!cmap->red)
goto fail;
- cmap->green = kmalloc(size, GFP_ATOMIC);
+ cmap->green = kmalloc(size, flags);
if (!cmap->green)
goto fail;
- cmap->blue = kmalloc(size, GFP_ATOMIC);
+ cmap->blue = kmalloc(size, flags);
if (!cmap->blue)
goto fail;
if (transp) {
- cmap->transp = kmalloc(size, GFP_ATOMIC);
+ cmap->transp = kmalloc(size, flags);
if (!cmap->transp)
goto fail;
} else {
@@ -116,12 +117,19 @@ int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp)
}
cmap->start = 0;
cmap->len = len;
- fb_copy_cmap(fb_default_cmap(len), cmap);
+ ret = fb_copy_cmap(fb_default_cmap(len), cmap);
+ if (ret)
+ goto fail;
return 0;
fail:
fb_dealloc_cmap(cmap);
- return -ENOMEM;
+ return ret;
+}
+
+int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp)
+{
+ return fb_alloc_cmap_gfp(cmap, len, transp, GFP_ATOMIC);
}
/**
@@ -256,8 +264,12 @@ int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *info)
int rc, size = cmap->len * sizeof(u16);
struct fb_cmap umap;
+ if (size < 0 || size < cmap->len)
+ return -E2BIG;
+
memset(&umap, 0, sizeof(struct fb_cmap));
- rc = fb_alloc_cmap(&umap, cmap->len, cmap->transp != NULL);
+ rc = fb_alloc_cmap_gfp(&umap, cmap->len, cmap->transp != NULL,
+ GFP_KERNEL);
if (rc)
return rc;
if (copy_from_user(umap.red, cmap->red, size) ||
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 7fca3dc4e47..d1631d37e9e 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -1122,6 +1122,7 @@ extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs
/* drivers/video/fbcmap.c */
extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
+extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
extern void fb_dealloc_cmap(struct fb_cmap *cmap);
extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);