[fs][fat] fail gracefully if the bdev passed in is null

2016-03-25 12:14:54 -07:00
parent 6c0f22c004
commit 4daede9164
1 changed files with 4 additions and 1 deletions
--- a/lib/fs/fat32/fat.c
+++ b/lib/fs/fat32/fat.c
@@ -52,7 +52,10 @@ void fat32_dump(fat_fs_t *fat) {

 status_t fat32_mount(bdev_t *dev, fscookie **cookie) {
  status_t result = NO_ERROR;
-  
+
+  if (!dev)
+      return ERR_NOT_VALID;
+
  uint8_t *bs = malloc(512);
  int err = bio_read(dev, bs, 1024, 512);
  if (err < 0) {