From f2bc316736e69e5623443a010f9581a01429c075 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 31 Mar 2009 20:14:59 +0200 Subject: [PATCH] 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 Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-taskfile.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 8d7e87d04b3b..0e333ecf2ad6 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -195,9 +195,7 @@ static void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, 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 @@ static void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, 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 @@ static void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, 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; } -- 2.20.1