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[PATCH] libata: add pio_data_xfer_noirq

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Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2006-05-24 14:14:41 +01:00 committed by Jeff Garzik
parent 622b20fcb8
commit 75e995855f
2 changed files with 27 additions and 0 deletions
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25
drivers/scsi/libata-core.c
View File

@ -3611,6 +3611,30 @@ 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);

2
include/linux/libata.h
View File

@ -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);