From 578cfa0d72f81526b2fcb1dd2463c47bbf633989 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Sat, 2 Feb 2008 19:56:47 +0100 Subject: ide: move check_dma_crc() to ide-dma.c * Move check_dma_crc() to ide-dma.c and add inline version for CONFIG_BLK_DEV_IDEDMA=n case. * Rename check_dma_crc() to ide_check_dma_crc(). Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-dma.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/ide/ide-dma.c') diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index 7beaf1e..3cf59f2 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -819,6 +819,26 @@ int ide_set_dma(ide_drive_t *drive) return 0; } +void ide_check_dma_crc(ide_drive_t *drive) +{ + u8 mode; + + ide_dma_off_quietly(drive); + drive->crc_count = 0; + mode = drive->current_speed; + /* + * Don't try non Ultra-DMA modes without iCRC's. Force the + * device to PIO and make the user enable SWDMA/MWDMA modes. + */ + if (mode > XFER_UDMA_0 && mode <= XFER_UDMA_7) + mode--; + else + mode = XFER_PIO_4; + ide_set_xfer_rate(drive, mode); + if (drive->current_speed >= XFER_SW_DMA_0) + ide_dma_on(drive); +} + #ifdef CONFIG_BLK_DEV_IDEDMA_PCI void ide_dma_lost_irq (ide_drive_t *drive) { -- cgit v1.1