From: Andrew Morton <akpm@osdl.org>
It's not necesayr to test PageHighmem in here - kmap_atomic() does the right
thing.
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
drivers/scsi/ide-scsi.c | 38 ++++++++++++--------------------------
1 files changed, 12 insertions(+), 26 deletions(-)
diff -puN drivers/scsi/ide-scsi.c~ide-scsi-highmem-cleanup drivers/scsi/ide-scsi.c
--- devel/drivers/scsi/ide-scsi.c~ide-scsi-highmem-cleanup 2005-09-07 03:03:58.000000000 -0700
+++ devel-akpm/drivers/scsi/ide-scsi.c 2005-09-07 03:06:03.000000000 -0700
@@ -180,19 +180,12 @@ static void idescsi_input_buffers (ide_d
return;
}
count = min(pc->sg->length - pc->b_count, bcount);
- if (PageHighMem(pc->sg->page)) {
- unsigned long flags;
-
- local_irq_save(flags);
- buf = kmap_atomic(pc->sg->page, KM_IRQ0) + pc->sg->offset;
- drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
- kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
- local_irq_restore(flags);
- } else {
- buf = page_address(pc->sg->page) + pc->sg->offset;
- drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
- }
- bcount -= count; pc->b_count += count;
+ buf = kmap_atomic(pc->sg->page, KM_IRQ0);
+ drive->hwif->atapi_input_bytes(drive,
+ buf + pc->b_count + pc->sg->offset, count);
+ kunmap_atomic(buf, KM_IRQ0);
+ bcount -= count;
+ pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
pc->b_count = 0;
@@ -212,19 +205,12 @@ static void idescsi_output_buffers (ide_
return;
}
count = min(pc->sg->length - pc->b_count, bcount);
- if (PageHighMem(pc->sg->page)) {
- unsigned long flags;
-
- local_irq_save(flags);
- buf = kmap_atomic(pc->sg->page, KM_IRQ0) + pc->sg->offset;
- drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
- kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
- local_irq_restore(flags);
- } else {
- buf = page_address(pc->sg->page) + pc->sg->offset;
- drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
- }
- bcount -= count; pc->b_count += count;
+ buf = kmap_atomic(pc->sg->page, KM_IRQ0);
+ drive->hwif->atapi_output_bytes(drive,
+ buf + pc->b_count + pc->sg->offset, count);
+ kunmap_atomic(buf, KM_IRQ0);
+ bcount -= count;
+ pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
pc->b_count = 0;
_