diff options
Diffstat (limited to 'drivers/ata/libata-sff.c')
| -rw-r--r-- | drivers/ata/libata-sff.c | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index dd528dbd9ccf..ccef99a0337c 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -64,46 +64,6 @@ u8 ata_irq_on(struct ata_port *ap) return tmp; } -u8 ata_dummy_irq_on (struct ata_port *ap) { return 0; } - -/** - * ata_irq_ack - Acknowledge a device interrupt. - * @ap: Port on which interrupts are enabled. - * - * Wait up to 10 ms for legacy IDE device to become idle (BUSY - * or BUSY+DRQ clear). Obtain dma status and port status from - * device. Clear the interrupt. Return port status. - * - * LOCKING: - */ - -u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq) -{ - unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY; - u8 host_stat = 0, post_stat = 0, status; - - status = ata_busy_wait(ap, bits, 1000); - if (status & bits) - if (ata_msg_err(ap)) - printk(KERN_ERR "abnormal status 0x%X\n", status); - - if (ap->ioaddr.bmdma_addr) { - /* get controller status; clear intr, err bits */ - host_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - iowrite8(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, - ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - - post_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - } - if (ata_msg_intr(ap)) - printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n", - __FUNCTION__, - host_stat, post_stat, status); - return status; -} - -u8 ata_dummy_irq_ack(struct ata_port *ap, unsigned int chk_drq) { return 0; } - /** * ata_tf_load - send taskfile registers to host controller * @ap: Port to which output is sent |