X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fide%2Fpci%2Fcs5530.c;h=518f430c1529c17a1d62fcfb997ed6849832f133;hb=f212ff28f08e4ddcef9f25b13463c45cc4204a0c;hp=acaf71fd4c09b0feaacd53e6af3caaee03b3634c;hpb=d638d4990bfb99998420e78e8fd4607bca5cf8d0;p=linux-2.6

diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/pci/cs5530.c
index acaf71fd4c..518f430c15 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/pci/cs5530.c
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/ide/pci/cs5530.c		Version 0.73	Mar 10 2007
+ * linux/drivers/ide/pci/cs5530.c		Version 0.74	Jul 28 2007
  *
  * Copyright (C) 2000			Andre Hedrick <andre@linux-ide.org>
  * Copyright (C) 2000			Mark Lord <mlord@pobox.com>
@@ -143,13 +143,11 @@ static int cs5530_config_dma(ide_drive_t *drive)
 	return 1;
 }
 
-static int cs5530_tune_chipset(ide_drive_t *drive, u8 mode)
+static int cs5530_tune_chipset(ide_drive_t *drive, const u8 mode)
 {
 	unsigned long basereg;
 	unsigned int reg, timings = 0;
 
-	mode = ide_rate_filter(drive, mode);
-
 	/*
 	 * Tell the drive to switch to the new mode; abort on failure.
 	 */
@@ -207,6 +205,9 @@ static unsigned int __devinit init_chipset_cs5530 (struct pci_dev *dev, const ch
 	struct pci_dev *master_0 = NULL, *cs5530_0 = NULL;
 	unsigned long flags;
 
+	if (pci_resource_start(dev, 4) == 0)
+		return -EFAULT;
+
 	dev = NULL;
 	while ((dev = pci_get_device(PCI_VENDOR_ID_CYRIX, PCI_ANY_ID, dev)) != NULL) {
 		switch (dev->device) {
@@ -325,6 +326,9 @@ static void __devinit init_hwif_cs5530 (ide_hwif_t *hwif)
 			/* needs autotuning later */
 	}
 
+	if (hwif->dma_base == 0)
+		return;
+
 	hwif->atapi_dma = 1;
 	hwif->ultra_mask = 0x07;
 	hwif->mwdma_mask = 0x07;