From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: [PATCH 14/19] cs5530: small cleanup Date: Fri, 12 Jan 2007 05:27:35 +0100 Message-ID: <20070112042735.28794.34617.sendpatchset@localhost.localdomain> References: <20070112042621.28794.6937.sendpatchset@localhost.localdomain> Return-path: In-Reply-To: <20070112042621.28794.6937.sendpatchset@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org To: linux-ide@vger.kernel.org Cc: Bartlomiej Zolnierkiewicz , linux-kernel@vger.kernel.org List-Id: linux-ide@vger.kernel.org [PATCH] cs5530: small cleanup * BUG() on unknown DMA mode in cs5530_config_dma() * there is no need to call hwif->ide_dma_host_{off,on}() in cs5530_config_dma() because hwif->ide_dma_host_{off,on}() is called by hwif->ide_dma_off_{quietly,on}() Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/pci/cs5530.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) Index: a/drivers/ide/pci/cs5530.c =================================================================== --- a.orig/drivers/ide/pci/cs5530.c +++ a/drivers/ide/pci/cs5530.c @@ -103,16 +103,13 @@ static int cs5530_config_dma (ide_drive_ int unit = drive->select.b.unit; ide_drive_t *mate = &hwif->drives[unit^1]; struct hd_driveid *id = drive->id; - unsigned int reg, timings; + unsigned int reg, timings = 0; unsigned long basereg; /* * Default to DMA-off in case we run into trouble here. */ hwif->ide_dma_off_quietly(drive); - /* turn off DMA while we fiddle */ - hwif->ide_dma_host_off(drive); - /* clear DMA_capable bit */ /* * The CS5530 specifies that two drives sharing a cable cannot @@ -182,9 +179,8 @@ static int cs5530_config_dma (ide_drive_ case XFER_MW_DMA_1: timings = 0x00012121; break; case XFER_MW_DMA_2: timings = 0x00002020; break; default: - printk(KERN_ERR "%s: cs5530_config_dma: huh? mode=%02x\n", - drive->name, mode); - return 1; /* failure */ + BUG(); + break; } basereg = CS5530_BASEREG(hwif); reg = hwif->INL(basereg+4); /* get drive0 config register */ @@ -199,8 +195,6 @@ static int cs5530_config_dma (ide_drive_ hwif->OUTL(reg, basereg+4); /* write drive0 config register */ hwif->OUTL(timings, basereg+12); /* write drive1 config register */ } - (void) hwif->ide_dma_host_on(drive); - /* set DMA_capable bit */ /* * Finally, turn DMA on in software, and exit.