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-rw-r--r--drivers/scsi/libata-core.c26
-rw-r--r--drivers/scsi/libata.h1
2 files changed, 22 insertions, 5 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 66df895c9617..8fda8228159c 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -5142,6 +5142,26 @@ static void ata_host_remove(struct ata_port *ap, unsigned int do_unregister)
}
/**
+ * ata_dev_init - Initialize an ata_device structure
+ * @dev: Device structure to initialize
+ *
+ * Initialize @dev in preparation for probing.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+void ata_dev_init(struct ata_device *dev)
+{
+ struct ata_port *ap = dev->ap;
+
+ memset((void *)dev, 0, sizeof(*dev));
+ dev->devno = dev - ap->device;
+ dev->pio_mask = UINT_MAX;
+ dev->mwdma_mask = UINT_MAX;
+ dev->udma_mask = UINT_MAX;
+}
+
+/**
* ata_host_init - Initialize an ata_port structure
* @ap: Structure to initialize
* @host: associated SCSI mid-layer structure
@@ -5155,7 +5175,6 @@ static void ata_host_remove(struct ata_port *ap, unsigned int do_unregister)
* LOCKING:
* Inherited from caller.
*/
-
static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
struct ata_host_set *host_set,
const struct ata_probe_ent *ent, unsigned int port_no)
@@ -5199,10 +5218,7 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
for (i = 0; i < ATA_MAX_DEVICES; i++) {
struct ata_device *dev = &ap->device[i];
dev->ap = ap;
- dev->devno = i;
- dev->pio_mask = UINT_MAX;
- dev->mwdma_mask = UINT_MAX;
- dev->udma_mask = UINT_MAX;
+ ata_dev_init(dev);
}
#ifdef ATA_IRQ_TRAP
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index d56d9e1d73dc..c2b1c919b964 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -62,6 +62,7 @@ extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
extern void ata_dev_select(struct ata_port *ap, unsigned int device,
unsigned int wait, unsigned int can_sleep);
extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
+extern void ata_dev_init(struct ata_device *dev);
extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);