ide: use PageHighMem() instead of ifdefs in ide_pio_bytes()
Use PageHighMem() instead of ifdefs in ide_pio_bytes()
(=> local IRQs won't be disabled when not necessary).
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 8d7e87d..0e333ec 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -195,9 +195,7 @@
struct scatterlist *sg = hwif->sg_table;
struct scatterlist *cursg = cmd->cursg;
struct page *page;
-#ifdef CONFIG_HIGHMEM
unsigned long flags;
-#endif
unsigned int offset;
u8 *buf;
@@ -218,9 +216,9 @@
page = nth_page(page, (offset >> PAGE_SHIFT));
offset %= PAGE_SIZE;
-#ifdef CONFIG_HIGHMEM
- local_irq_save(flags);
-#endif
+ if (PageHighMem(page))
+ local_irq_save(flags);
+
buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
cmd->nleft -= nr_bytes;
@@ -238,9 +236,9 @@
hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes);
kunmap_atomic(buf, KM_BIO_SRC_IRQ);
-#ifdef CONFIG_HIGHMEM
- local_irq_restore(flags);
-#endif
+
+ if (PageHighMem(page))
+ local_irq_restore(flags);
len -= nr_bytes;
}