From efdd1ee3516de0c692ab74cdc8f8db3b51a66480 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Mon, 31 Oct 2005 14:08:53 -0800
Subject: [PATCH] --- yaml --- r: 11986 b: refs/heads/master c:
 a717f77362d4fe044721c126c89e2a38e731a576 h: refs/heads/master v: v3

---
 [refs]                        |  2 +-
 trunk/drivers/scsi/ide-scsi.c | 44 +++++++++++++++++++++++++----------
 2 files changed, 33 insertions(+), 13 deletions(-)

diff --git a/[refs] b/[refs]
index 90a56690826d..253c12c7c8ac 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f2c84c0e84bfa637a7161eac10157cf3b05b4a73
+refs/heads/master: a717f77362d4fe044721c126c89e2a38e731a576
diff --git a/trunk/drivers/scsi/ide-scsi.c b/trunk/drivers/scsi/ide-scsi.c
index 00d6a6657ebc..a440ea38efaa 100644
--- a/trunk/drivers/scsi/ide-scsi.c
+++ b/trunk/drivers/scsi/ide-scsi.c
@@ -180,12 +180,22 @@ static void idescsi_input_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsigne
 			return;
 		}
 		count = min(pc->sg->length - pc->b_count, bcount);
-		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 (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;
 		if (pc->b_count == pc->sg->length) {
 			pc->sg++;
 			pc->b_count = 0;
@@ -205,12 +215,22 @@ static void idescsi_output_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsign
 			return;
 		}
 		count = min(pc->sg->length - pc->b_count, bcount);
-		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 (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;
 		if (pc->b_count == pc->sg->length) {
 			pc->sg++;
 			pc->b_count = 0;