diff options
| author | Frank Li <Frank.Li@freescale.com> | 2010-10-26 11:02:19 +0800 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-30 12:30:50 +0100 |
| commit | 6fe4c590313133ebd5dadb769031489ff178ece1 (patch) | |
| tree | 7fad4ea814e69270869a08cfeb727ed616224765 | |
| parent | 6411bf6cdfe9b444bc3aa0c23f8cf35460d69432 (diff) | |
MTD: Fix wrong check register_blkdev return value
register_blkdev return 1..255 when major = 0.
if (ret ) {
printk(KERN_WARNING "Unable to register %s block device on major %d: %d\n",
tr->name, tr->major, ret);
mutex_unlock(&mtd_table_mutex);
return ret;
}
Above code will return fail when register_blkdev return allocated major number.
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/mtd/mtd_blkdevs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index a919587ed48..63790e975d2 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -502,13 +502,16 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr) mutex_lock(&mtd_table_mutex); ret = register_blkdev(tr->major, tr->name); - if (ret) { + if (ret < 0) { printk(KERN_WARNING "Unable to register %s block device on major %d: %d\n", tr->name, tr->major, ret); mutex_unlock(&mtd_table_mutex); return ret; } + if (ret) + tr->major = ret; + tr->blkshift = ffs(tr->blksize) - 1; INIT_LIST_HEAD(&tr->devs); |