diff options
| -rw-r--r-- | drivers/scsi/libata-core.c | 59 | ||||
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 9 | ||||
| -rw-r--r-- | drivers/scsi/libata.h | 1 |
3 files changed, 18 insertions, 51 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 8be7dc0b47b..ff18fa7044c 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -295,28 +295,6 @@ void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf) } /** - * ata_exec - issue ATA command to host controller - * @ap: port to which command is being issued - * @tf: ATA taskfile register set - * - * Issues PIO/MMIO write to ATA command register, with proper - * synchronization with interrupt handler / other threads. - * - * LOCKING: - * Obtains host_set lock. - */ - -static inline void ata_exec(struct ata_port *ap, const struct ata_taskfile *tf) -{ - unsigned long flags; - - DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command); - spin_lock_irqsave(&ap->host_set->lock, flags); - ap->ops->exec_command(ap, tf); - spin_unlock_irqrestore(&ap->host_set->lock, flags); -} - -/** * ata_tf_to_host - issue ATA taskfile to host controller * @ap: port to which command is being issued * @tf: ATA taskfile register set @@ -326,30 +304,11 @@ static inline void ata_exec(struct ata_port *ap, const struct ata_taskfile *tf) * other threads. * * LOCKING: - * Obtains host_set lock. - */ - -static void ata_tf_to_host(struct ata_port *ap, const struct ata_taskfile *tf) -{ - ap->ops->tf_load(ap, tf); - - ata_exec(ap, tf); -} - -/** - * ata_tf_to_host_nolock - issue ATA taskfile to host controller - * @ap: port to which command is being issued - * @tf: ATA taskfile register set - * - * Issues ATA taskfile register set to ATA host controller, - * with proper synchronization with interrupt handler and - * other threads. - * - * LOCKING: * spin_lock_irqsave(host_set lock) */ -void ata_tf_to_host_nolock(struct ata_port *ap, const struct ata_taskfile *tf) +static inline void ata_tf_to_host(struct ata_port *ap, + const struct ata_taskfile *tf) { ap->ops->tf_load(ap, tf); ap->ops->exec_command(ap, tf); @@ -1912,12 +1871,14 @@ static void ata_bus_post_reset(struct ata_port *ap, unsigned int devmask) * * LOCKING: * PCI/etc. bus probe sem. + * Obtains host_set lock. * */ static unsigned int ata_bus_edd(struct ata_port *ap) { struct ata_taskfile tf; + unsigned long flags; /* set up execute-device-diag (bus reset) taskfile */ /* also, take interrupts to a known state (disabled) */ @@ -1928,7 +1889,9 @@ static unsigned int ata_bus_edd(struct ata_port *ap) tf.protocol = ATA_PROT_NODATA; /* do bus reset */ + spin_lock_irqsave(&ap->host_set->lock, flags); ata_tf_to_host(ap, &tf); + spin_unlock_irqrestore(&ap->host_set->lock, flags); /* spec says at least 2ms. but who knows with those * crazy ATAPI devices... @@ -3555,7 +3518,7 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc) switch (qc->tf.protocol) { case ATA_PROT_NODATA: - ata_tf_to_host_nolock(ap, &qc->tf); + ata_tf_to_host(ap, &qc->tf); break; case ATA_PROT_DMA: @@ -3566,20 +3529,20 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc) case ATA_PROT_PIO: /* load tf registers, initiate polling pio */ ata_qc_set_polling(qc); - ata_tf_to_host_nolock(ap, &qc->tf); + ata_tf_to_host(ap, &qc->tf); ap->hsm_task_state = HSM_ST; queue_work(ata_wq, &ap->pio_task); break; case ATA_PROT_ATAPI: ata_qc_set_polling(qc); - ata_tf_to_host_nolock(ap, &qc->tf); + ata_tf_to_host(ap, &qc->tf); queue_work(ata_wq, &ap->packet_task); break; case ATA_PROT_ATAPI_NODATA: ap->flags |= ATA_FLAG_NOINTR; - ata_tf_to_host_nolock(ap, &qc->tf); + ata_tf_to_host(ap, &qc->tf); queue_work(ata_wq, &ap->packet_task); break; @@ -4126,8 +4089,6 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host, host->unique_id = ata_unique_id++; host->max_cmd_len = 12; - scsi_assign_lock(host, &host_set->lock); - ap->flags = ATA_FLAG_PORT_DISABLED; ap->id = host->unique_id; ap->host = host; diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 961b4bc3cc7..4f8a013a12f 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -39,6 +39,7 @@ #include <scsi/scsi.h> #include "scsi.h" #include <scsi/scsi_host.h> +#include <scsi/scsi_device.h> #include <linux/libata.h> #include <linux/hdreg.h> #include <asm/uaccess.h> @@ -2399,8 +2400,12 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) struct ata_port *ap; struct ata_device *dev; struct scsi_device *scsidev = cmd->device; + struct Scsi_Host *shost = scsidev->host; - ap = (struct ata_port *) &scsidev->host->hostdata[0]; + ap = (struct ata_port *) &shost->hostdata[0]; + + spin_unlock(shost->host_lock); + spin_lock(&ap->host_set->lock); ata_scsi_dump_cdb(ap, cmd); @@ -2423,6 +2428,8 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) ata_scsi_translate(ap, dev, cmd, done, atapi_xlat); out_unlock: + spin_unlock(&ap->host_set->lock); + spin_lock(shost->host_lock); return 0; } diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h index 10ecd9e15e4..fad051ca467 100644 --- a/drivers/scsi/libata.h +++ b/drivers/scsi/libata.h @@ -48,7 +48,6 @@ extern int ata_qc_issue(struct ata_queued_cmd *qc); 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 ata_tf_to_host_nolock(struct ata_port *ap, const struct ata_taskfile *tf); extern void swap_buf_le16(u16 *buf, unsigned int buf_words); extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg); |