X-Git-Url: http://bbs.cooldavid.org/git/?a=blobdiff_plain;f=drivers%2Fscsi%2Fsr.c;h=e148341079b5108f873a4f26d86344984a488292;hb=2a48fc0ab24241755dc93bfd4f01d68efab47f5a;hp=ba9c3e0387ce313fc9ee588552c42101418e9f13;hpb=613655fa39ff6957754fa8ceb8559980920eb8ee;p=net-next-2.6.git diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index ba9c3e0387c..e148341079b 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -44,7 +44,6 @@ #include #include #include -#include #include #include @@ -76,6 +75,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_WORM); CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_DVD_RAM|CDC_GENERIC_PACKET| \ CDC_MRW|CDC_MRW_W|CDC_RAM) +static DEFINE_MUTEX(sr_mutex); static int sr_probe(struct device *); static int sr_remove(struct device *); static int sr_done(struct scsi_cmnd *); @@ -470,24 +470,24 @@ static int sr_block_open(struct block_device *bdev, fmode_t mode) struct scsi_cd *cd; int ret = -ENXIO; - lock_kernel(); + mutex_lock(&sr_mutex); cd = scsi_cd_get(bdev->bd_disk); if (cd) { ret = cdrom_open(&cd->cdi, bdev, mode); if (ret) scsi_cd_put(cd); } - unlock_kernel(); + mutex_unlock(&sr_mutex); return ret; } static int sr_block_release(struct gendisk *disk, fmode_t mode) { struct scsi_cd *cd = scsi_cd(disk); - lock_kernel(); + mutex_lock(&sr_mutex); cdrom_release(&cd->cdi, mode); scsi_cd_put(cd); - unlock_kernel(); + mutex_unlock(&sr_mutex); return 0; } @@ -499,7 +499,7 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, void __user *argp = (void __user *)arg; int ret; - lock_kernel(); + mutex_lock(&sr_mutex); /* * Send SCSI addressing ioctls directly to mid level, send other @@ -529,7 +529,7 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, ret = scsi_ioctl(sdev, cmd, argp); out: - unlock_kernel(); + mutex_unlock(&sr_mutex); return ret; }