From: Bartlomiej Zolnierkiewicz Date: Sat, 26 Jan 2008 19:13:00 +0000 (+0100) Subject: cy82c693: correct DMA modes clipping X-Git-Tag: v2.6.25-rc1~1227^2~57 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a530201afed5074dac69b29c519a1df59da97945;p=linux-2.6 cy82c693: correct DMA modes clipping * Mask device DMA masks by ATA_{S,M}WDMA2 in cy82c693_ide_dma_on(). * Remove clipping of DMA modes by id->tDMA in cy82c693_dma_enable(): - id->tDMA may not be defined on newer devices - id->vendor6/id->tDMA word is in LE endianness (cy82c693 seems to be Alpha specific though) * Bump driver version. Acked-by: Sergei Shtylyov Signed-off-by: Bartlomiej Zolnierkiewicz --- diff --git a/drivers/ide/pci/cy82c693.c b/drivers/ide/pci/cy82c693.c index 1cd4e9cb05..e7466f2bee 100644 --- a/drivers/ide/pci/cy82c693.c +++ b/drivers/ide/pci/cy82c693.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/cy82c693.c Version 0.42 Oct 23, 2007 + * linux/drivers/ide/pci/cy82c693.c Version 0.43 Nov 7, 2007 * * Copyright (C) 1998-2000 Andreas S. Krebs (akrebs@altavista.net), Maintainer * Copyright (C) 1998-2002 Andre Hedrick , Integrator @@ -182,10 +182,7 @@ static void cy82c693_dma_enable (ide_drive_t *drive, int mode, int single) if (mode>2) /* make sure we set a valid mode */ mode = 2; - - if (mode > drive->id->tDMA) /* to be absolutly sure we have a valid mode */ - mode = drive->id->tDMA; - + index = (HWIF(drive)->channel==0) ? CY82_INDEX_CHANNEL0 : CY82_INDEX_CHANNEL1; #if CY82C693_DEBUG_LOGS @@ -250,7 +247,10 @@ static int cy82c693_ide_dma_on (ide_drive_t *drive) mmode = id->dma_mword & (id->dma_mword >> 8); smode = id->dma_1word & (id->dma_1word >> 8); - + + mmode &= ATA_MWDMA2; + smode &= ATA_SWDMA2; + if (mmode != 0) { /* enable multi */ cy82c693_dma_enable(drive, (mmode >> 1), 0);