drivers: fix up various ->llseek() implementations

Fix up a few ->llseek() implementations that won't deal with SEEK_HOLE/SEEK_DATA
properly.  Make them future proof so that if we ever add new options they will
return -EINVAL.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/macintosh/nvram.c b/drivers/macintosh/nvram.c
index a271c8218d82..f0e03e7937e3 100644
--- a/drivers/macintosh/nvram.c
+++ b/drivers/macintosh/nvram.c
@@ -21,12 +21,16 @@
 static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
 {
         switch (origin) {
+        case 0:
+                break;
         case 1:
                 offset += file->f_pos;
                 break;
         case 2:
                 offset += NVRAM_SIZE;
                 break;
+        default:
+                offset = -1;
         }
         if (offset < 0)
                 return -EINVAL;