[PATCH] pktcdvd: Allow non-writable media to be mounted

If opening for write fails, the open method should return -EROFS.  This makes
"mount" try again with a read-only mount, instead of just giving up.

Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 7399976..edf6bf2 100644 (file)
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -1895,7 +1895,7 @@ static int pkt_open_write(struct pktcdvd_device *pd)
 
        if ((ret = pkt_probe_settings(pd))) {
                VPRINTK("pktcdvd: %s failed probe\n", pd->name);
-               return -EIO;
+               return -EROFS;
        }
 
        if ((ret = pkt_set_write_settings(pd))) {
@@ -2053,10 +2053,9 @@ static int pkt_open(struct inode *inode, struct file *file)
                        goto out_dec;
                }
        } else {
-               if (pkt_open_dev(pd, file->f_mode & FMODE_WRITE)) {
-                       ret = -EIO;
+               ret = pkt_open_dev(pd, file->f_mode & FMODE_WRITE);
+               if (ret)
                        goto out_dec;
-               }
                /*
                 * needed here as well, since ext2 (among others) may change
                 * the blocksize at mount time