From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> 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 <petkovbb@xxxxxxxxx> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> --- drivers/ide/ide-taskfile.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) Index: b/drivers/ide/ide-taskfile.c =================================================================== --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -195,9 +195,7 @@ static void ide_pio_bytes(ide_drive_t *d 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; @@ -215,9 +213,9 @@ static void ide_pio_bytes(ide_drive_t *d 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; @@ -235,9 +233,9 @@ static void ide_pio_bytes(ide_drive_t *d 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; } -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
