All host drivers now either set hwif->mmio or reserve continuous
I/O resources so remove no longer needed hwif->straight8 flag
and never reached code for 'hwif->straight8 == 0' case.

Signed-off-by: Bartlomiej Zolnierkiewicz
---
drivers/ide/ide.c | 36 +++++++++++-------------------------
include/linux/ide.h | 1 -
2 files changed, 11 insertions(+), 26 deletions(-)

Index: b/drivers/ide/ide.c
================================================== =================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -253,29 +253,21 @@ static struct resource* hwif_request_reg
int ide_hwif_request_regions(ide_hwif_t *hwif)
{
unsigned long addr;
- unsigned int i;

if (hwif->mmio)
return 0;
+
addr = hwif->io_ports[IDE_CONTROL_OFFSET];
+
if (addr && !hwif_request_region(hwif, addr, 1))
goto control_region_busy;
- hwif->straight8 = 0;
+
addr = hwif->io_ports[IDE_DATA_OFFSET];
- if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
- if (!hwif_request_region(hwif, addr, 8))
- goto data_region_busy;
- hwif->straight8 = 1;
- return 0;
- }
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- addr = hwif->io_ports[i];
- if (!hwif_request_region(hwif, addr, 1)) {
- while (--i)
- release_region(addr, 1);
- goto data_region_busy;
- }
- }
+ BUG_ON((addr | 7) != hwif->io_ports[IDE_STATUS_OFFSET]);
+
+ if (!hwif_request_region(hwif, addr, 8))
+ goto data_region_busy;
+
return 0;

data_region_busy:
@@ -301,19 +293,13 @@ control_region_busy:

void ide_hwif_release_regions(ide_hwif_t *hwif)
{
- u32 i = 0;
-
if (hwif->mmio)
return;
+
if (hwif->io_ports[IDE_CONTROL_OFFSET])
release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
- if (hwif->straight8) {
- release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
- return;
- }
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
- if (hwif->io_ports[i])
- release_region(hwif->io_ports[i], 1);
+
+ release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
}

void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
Index: b/include/linux/ide.h
================================================== =================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -524,7 +524,6 @@ typedef struct hwif_s {
unsigned reset : 1; /* reset after probe */
unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
unsigned mmio : 1; /* host uses MMIO */
- unsigned straight8 : 1; /* Alan's straight 8 check */

struct device gendev;
struct class_device classdev;
--
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