diff options
| -rw-r--r-- | drivers/scsi/libata-core.c | 25 | ||||
| -rw-r--r-- | include/linux/libata.h | 2 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 074a46e5bbd..f19fe662f0c 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -3612,6 +3612,30 @@ void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf, } /** + * ata_pio_data_xfer_noirq - Transfer data by PIO + * @adev: device to target + * @buf: data buffer + * @buflen: buffer length + * @write_data: read/write + * + * Transfer data from/to the device data register by PIO. Do the + * transfer with interrupts disabled. + * + * LOCKING: + * Inherited from caller. + */ + +void ata_pio_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, + unsigned int buflen, int write_data) +{ + unsigned long flags; + local_irq_save(flags); + ata_pio_data_xfer(adev, buf, buflen, write_data); + local_irq_restore(flags); +} + + +/** * ata_pio_sector - Transfer ATA_SECT_SIZE (512 bytes) of data. * @qc: Command on going * @@ -5675,6 +5699,7 @@ EXPORT_SYMBOL_GPL(ata_host_stop); EXPORT_SYMBOL_GPL(ata_interrupt); EXPORT_SYMBOL_GPL(ata_mmio_data_xfer); EXPORT_SYMBOL_GPL(ata_pio_data_xfer); +EXPORT_SYMBOL_GPL(ata_pio_data_xfer_noirq); EXPORT_SYMBOL_GPL(ata_qc_prep); EXPORT_SYMBOL_GPL(ata_noop_qc_prep); EXPORT_SYMBOL_GPL(ata_bmdma_setup); diff --git a/include/linux/libata.h b/include/linux/libata.h index 9c60b4a4e2f..b0ee1c1437d 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -651,6 +651,8 @@ extern void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data); extern void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data); +extern void ata_pio_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, + unsigned int buflen, int write_data); extern void ata_qc_prep(struct ata_queued_cmd *qc); extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |