#include <linux/blkpg.h>
#include <linux/kref.h>
#include <linux/delay.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <scsi/scsi.h>
/* This semaphore is used to mediate the 0->1 reference get in the
* face of object destruction (i.e. we can't allow a get on an
* object after last put) */
-static DECLARE_MUTEX(sd_ref_sem);
+static DEFINE_MUTEX(sd_ref_mutex);
static int sd_revalidate_disk(struct gendisk *disk);
static void sd_rw_intr(struct scsi_cmnd * SCpnt);
{
struct scsi_disk *sdkp;
- down(&sd_ref_sem);
+ mutex_lock(&sd_ref_mutex);
sdkp = __scsi_disk_get(disk);
- up(&sd_ref_sem);
+ mutex_unlock(&sd_ref_mutex);
return sdkp;
}
{
struct scsi_disk *sdkp;
- down(&sd_ref_sem);
+ mutex_lock(&sd_ref_mutex);
sdkp = dev_get_drvdata(dev);
if (sdkp)
sdkp = __scsi_disk_get(sdkp->disk);
- up(&sd_ref_sem);
+ mutex_unlock(&sd_ref_mutex);
return sdkp;
}
{
struct scsi_device *sdev = sdkp->device;
- down(&sd_ref_sem);
+ mutex_lock(&sd_ref_mutex);
kref_put(&sdkp->kref, scsi_disk_release);
scsi_device_put(sdev);
- up(&sd_ref_sem);
+ mutex_unlock(&sd_ref_mutex);
}
/**
**/
static int sd_init_command(struct scsi_cmnd * SCpnt)
{
- unsigned int this_count, timeout;
- struct gendisk *disk;
- sector_t block;
struct scsi_device *sdp = SCpnt->device;
struct request *rq = SCpnt->request;
-
- timeout = sdp->timeout;
-
- /*
- * SG_IO from block layer already setup, just copy cdb basically
- */
- if (blk_pc_request(rq)) {
- scsi_setup_blk_pc_cmnd(SCpnt);
- if (rq->timeout)
- timeout = rq->timeout;
-
- goto queue;
- }
-
- /*
- * we only do REQ_CMD and REQ_BLOCK_PC
- */
- if (!blk_fs_request(rq))
- return 0;
-
- disk = rq->rq_disk;
- block = rq->sector;
- this_count = SCpnt->request_bufflen >> 9;
+ struct gendisk *disk = rq->rq_disk;
+ sector_t block = rq->sector;
+ unsigned int this_count = SCpnt->request_bufflen >> 9;
+ unsigned int timeout = sdp->timeout;
SCSI_LOG_HLQUEUE(1, printk("sd_init_command: disk=%s, block=%llu, "
"count=%d\n", disk->disk_name,
SCpnt->transfersize = sdp->sector_size;
SCpnt->underflow = this_count << 9;
SCpnt->allowed = SD_MAX_RETRIES;
-
-queue:
SCpnt->timeout_per_command = timeout;
/*
return 0;
}
-static int sd_hdio_getgeo(struct block_device *bdev, struct hd_geometry __user *loc)
+static int sd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk);
struct scsi_device *sdp = sdkp->device;
else
scsicam_bios_param(bdev, sdkp->capacity, diskinfo);
- if (put_user(diskinfo[0], &loc->heads))
- return -EFAULT;
- if (put_user(diskinfo[1], &loc->sectors))
- return -EFAULT;
- if (put_user(diskinfo[2], &loc->cylinders))
- return -EFAULT;
- if (put_user((unsigned)get_start_sect(bdev),
- (unsigned long __user *)&loc->start))
- return -EFAULT;
+ geo->heads = diskinfo[0];
+ geo->sectors = diskinfo[1];
+ geo->cylinders = diskinfo[2];
return 0;
}
if (!scsi_block_when_processing_errors(sdp) || !error)
return error;
- if (cmd == HDIO_GETGEO) {
- if (!arg)
- return -EINVAL;
- return sd_hdio_getgeo(bdev, p);
- }
-
/*
* Send SCSI addressing ioctls directly to mid level, send other
* ioctls to block level and then onto mid level if they can't be
.open = sd_open,
.release = sd_release,
.ioctl = sd_ioctl,
+ .getgeo = sd_getgeo,
#ifdef CONFIG_COMPAT
.compat_ioctl = sd_compat_ioctl,
#endif
relatively rare error condition, no care is taken to avoid
unnecessary additional work such as memcpy's that could be avoided.
*/
-
- /*
- * If SG_IO from block layer then set good_bytes to stop retries;
- * else if errors, check them, and if necessary prepare for
- * (partial) retries.
- */
- if (blk_pc_request(SCpnt->request))
- good_bytes = this_count;
- else if (driver_byte(result) != 0 &&
+ if (driver_byte(result) != 0 &&
sense_valid && !sense_deferred) {
switch (sshdr.sense_key) {
case MEDIUM_ERROR:
del_gendisk(sdkp->disk);
sd_shutdown(dev);
- down(&sd_ref_sem);
+ mutex_lock(&sd_ref_mutex);
dev_set_drvdata(dev, NULL);
kref_put(&sdkp->kref, scsi_disk_release);
- up(&sd_ref_sem);
+ mutex_unlock(&sd_ref_mutex);
return 0;
}
* scsi_disk_release - Called to free the scsi_disk structure
* @kref: pointer to embedded kref
*
- * sd_ref_sem must be held entering this routine. Because it is
+ * sd_ref_mutex must be held entering this routine. Because it is
* called on last put, you should always use the scsi_disk_get()
* scsi_disk_put() helpers which manipulate the semaphore directly
* and never do a direct kref_put().