diff options
| author | Pierre Ossman <drzeus-list@drzeus.cx> | 2005-09-06 15:18:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-07 16:57:50 -0700 |
| commit | a00fc09029f02ca833cf90e5d5625f08c4ac4f51 (patch) | |
| tree | 02774c6f35623a27fbefbe1fe7f26f4a0f5fdd32 /drivers/mmc/mmc_block.c | |
| parent | 335eadf2ef6a1122a720aea98e758e5d431da87d (diff) | |
| download | linux-a00fc09029f02ca833cf90e5d5625f08c4ac4f51.tar.bz2 | |
[PATCH] sd: read-only switch
Support for the read-only switch on SD cards which must be enforced by the
host.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/mmc/mmc_block.c')
| -rw-r--r-- | drivers/mmc/mmc_block.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c index d4eee99c2bf6..fa83f15fdf16 100644 --- a/drivers/mmc/mmc_block.c +++ b/drivers/mmc/mmc_block.c @@ -95,6 +95,10 @@ static int mmc_blk_open(struct inode *inode, struct file *filp) if (md->usage == 2) check_disk_change(inode->i_bdev); ret = 0; + + if ((filp->f_mode & FMODE_WRITE) && + mmc_card_readonly(md->queue.card)) + ret = -EROFS; } return ret; @@ -403,9 +407,10 @@ static int mmc_blk_probe(struct mmc_card *card) if (err) goto out; - printk(KERN_INFO "%s: %s %s %dKiB\n", + printk(KERN_INFO "%s: %s %s %dKiB %s\n", md->disk->disk_name, mmc_card_id(card), mmc_card_name(card), - (card->csd.capacity << card->csd.read_blkbits) / 1024); + (card->csd.capacity << card->csd.read_blkbits) / 1024, + mmc_card_readonly(card)?"(ro)":""); mmc_set_drvdata(card, md); add_disk(md->disk); |