diff options
Diffstat (limited to 'drivers/video/fbmem.c')
| -rw-r--r-- | drivers/video/fbmem.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 944855b3e4a..372aa177682 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -435,6 +435,11 @@ int fb_prepare_logo(struct fb_info *info, int rotate) depth = info->var.green.length; } + if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR) { + /* assume console colormap */ + depth = 4; + } + if (depth >= 8) { switch (info->fix.visual) { case FB_VISUAL_TRUECOLOR: @@ -669,13 +674,19 @@ fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) total_size = info->fix.smem_len; if (p > total_size) - return 0; + return -EFBIG; - if (count >= total_size) + if (count > total_size) { + err = -EFBIG; count = total_size; + } + + if (count + p > total_size) { + if (!err) + err = -ENOSPC; - if (count + p > total_size) count = total_size - p; + } buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL); @@ -717,7 +728,7 @@ fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) kfree(buffer); - return (err) ? err : cnt; + return (cnt) ? cnt : err; } #ifdef CONFIG_KMOD |