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| author | Jeff Garzik <jeff@garzik.org> | 2007-08-15 05:38:46 -0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-12 14:55:34 -0400 |
| commit | 6d32d30f55020d766388df7515f771f68c973033 (patch) | |
| tree | ec0efe48460b5b3f177fed2698ccd04b7964359b /drivers/ata/pata_scc.c | |
| parent | cb94c1cf5a6beffbd8935eb91227df0dd1987644 (diff) | |
| download | kernel_samsung_smdk4412-6d32d30f55020d766388df7515f771f68c973033.zip kernel_samsung_smdk4412-6d32d30f55020d766388df7515f771f68c973033.tar.gz kernel_samsung_smdk4412-6d32d30f55020d766388df7515f771f68c973033.tar.bz2 | |
[libata] Remove ->irq_ack() hook, and ata_dummy_irq_on()
* ->irq_ack() is redundant to what the irq handler already
performs... chk-status + irq-clear. Furthermore, it is only
called in one place, when screaming-irq-debugging is enabled,
so we don't want to bother with a hook just for that.
* ata_dummy_irq_on() is only ever used in drivers that have
no callpath reaching ->irq_on(). Remove .irq_on hook from
those drivers, and the now-unused ata_dummy_irq_on()
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/pata_scc.c')
| -rw-r--r-- | drivers/ata/pata_scc.c | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c index 63fe99a1..95f04b8 100644 --- a/drivers/ata/pata_scc.c +++ b/drivers/ata/pata_scc.c @@ -839,38 +839,6 @@ static u8 scc_irq_on (struct ata_port *ap) } /** - * scc_irq_ack - Acknowledge a device interrupt. - * @ap: Port on which interrupts are enabled. - * - * Note: Original code is ata_irq_ack(). - */ - -static u8 scc_irq_ack (struct ata_port *ap, unsigned int chk_drq) -{ - unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY; - u8 host_stat, post_stat, 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); - - /* get controller status; clear intr, err bits */ - host_stat = in_be32(ap->ioaddr.bmdma_addr + SCC_DMA_STATUS); - out_be32(ap->ioaddr.bmdma_addr + SCC_DMA_STATUS, - host_stat | ATA_DMA_INTR | ATA_DMA_ERR); - - post_stat = in_be32(ap->ioaddr.bmdma_addr + SCC_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; -} - -/** * scc_bmdma_freeze - Freeze BMDMA controller port * @ap: port to freeze * @@ -1047,7 +1015,6 @@ static const struct ata_port_operations scc_pata_ops = { .irq_clear = scc_bmdma_irq_clear, .irq_on = scc_irq_on, - .irq_ack = scc_irq_ack, .port_start = scc_port_start, .port_stop = scc_port_stop, |