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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2009-06-15 20:52:57 +0400
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-06-15 20:52:57 +0400
commiteba8999cefb6b61704d8fa825b7694825a087765 (patch)
treee5f7d1ed464efe21160b425e8a57b017b9e99441 /drivers/ide/gayle.c
parent74414a91204ee57528041f771da1fd1ee3ba64c4 (diff)
downloadlinux-eba8999cefb6b61704d8fa825b7694825a087765.tar.xz
ide: move IRQ clearing from ack_intr() method to clear_irq() method (take 2)
There are now two methods that clear the port interrupt: ack_intr() method, implemented only on M680x0 machines, that is called at the start of ide_intr(), and clear_irq() method, that is called somewhat later in this function. In order to stop this duplication, delegate the task of clearing the interrupt to clear_irq() method, only leaving to ack_intr() the task of testing for the port interrupt. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/gayle.c')
-rw-r--r--drivers/ide/gayle.c23
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/ide/gayle.c b/drivers/ide/gayle.c
index 4451a6a5dfe0..c5dd1e5cca4d 100644
--- a/drivers/ide/gayle.c
+++ b/drivers/ide/gayle.c
@@ -66,7 +66,7 @@ MODULE_PARM_DESC(doubler, "enable support for IDE doublers");
* Check and acknowledge the interrupt status
*/
-static int gayle_ack_intr_a4000(ide_hwif_t *hwif)
+static int gayle_ack_intr(ide_hwif_t *hwif)
{
unsigned char ch;
@@ -76,16 +76,12 @@ static int gayle_ack_intr_a4000(ide_hwif_t *hwif)
return 1;
}
-static int gayle_ack_intr_a1200(ide_hwif_t *hwif)
+static void gayle_a1200_clear_irq(ide_drive_t *drive)
{
- unsigned char ch;
+ ide_hwif_t *hwif = drive->hwif;
- ch = z_readb(hwif->io_ports.irq_addr);
- if (!(ch & GAYLE_IRQ_IDE))
- return 0;
(void)z_readb(hwif->io_ports.status_addr);
z_writeb(0x7c, hwif->io_ports.irq_addr);
- return 1;
}
static void __init gayle_setup_ports(struct ide_hw *hw, unsigned long base,
@@ -108,6 +104,10 @@ static void __init gayle_setup_ports(struct ide_hw *hw, unsigned long base,
hw->ack_intr = ack_intr;
}
+static const struct ide_port_ops gayle_a1200_port_ops = {
+ .clear_irq = gayle_a1200_clear_irq,
+};
+
static const struct ide_port_info gayle_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_SERIALIZE |
IDE_HFLAG_NO_DMA,
@@ -123,9 +123,9 @@ static int __init gayle_init(void)
{
unsigned long phys_base, res_start, res_n;
unsigned long base, ctrlport, irqport;
- ide_ack_intr_t *ack_intr;
int a4000, i, rc;
struct ide_hw hw[GAYLE_NUM_HWIFS], *hws[GAYLE_NUM_HWIFS];
+ struct ide_port_info d = gayle_port_info;
if (!MACH_IS_AMIGA)
return -ENODEV;
@@ -148,11 +148,10 @@ found:
if (a4000) {
phys_base = GAYLE_BASE_4000;
irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_4000);
- ack_intr = gayle_ack_intr_a4000;
} else {
phys_base = GAYLE_BASE_1200;
irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_1200);
- ack_intr = gayle_ack_intr_a1200;
+ d.port_ops = &gayle_a1200_port_ops;
}
res_start = ((unsigned long)phys_base) & ~(GAYLE_NEXT_PORT-1);
@@ -165,12 +164,12 @@ found:
base = (unsigned long)ZTWO_VADDR(phys_base + i * GAYLE_NEXT_PORT);
ctrlport = GAYLE_HAS_CONTROL_REG ? (base + GAYLE_CONTROL) : 0;
- gayle_setup_ports(&hw[i], base, ctrlport, irqport, ack_intr);
+ gayle_setup_ports(&hw[i], base, ctrlport, irqport, gayle_ack_intr);
hws[i] = &hw[i];
}
- rc = ide_host_add(&gayle_port_info, hws, i, NULL);
+ rc = ide_host_add(&d, hws, i, NULL);
if (rc)
release_mem_region(res_start, res_n);