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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-09-12 17:14:03 +0100
committerJeff Garzik <jeff@garzik.org>2006-09-12 12:01:46 -0400
commit76ff3c6e3b389a5a7692811dd456e0ff58340cac (patch)
treea004a3ba02a2182f64803d9fdcf46846cd32162a /drivers/ata/pata_amd.c
parentaf323a2fb508b0fa1c1fa91cbc6ec86fb0879c07 (diff)
downloadlinux-76ff3c6e3b389a5a7692811dd456e0ff58340cac.tar.gz
linux-76ff3c6e3b389a5a7692811dd456e0ff58340cac.tar.xz
[PATCH] pata_amd: Check enable bits on Nvidia
A couple of people reported long delays on probe with the newer kernels and Nvidia PATA. This turned out to be because the Nvidia path forgot to check the enable bits so probed empty ports. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/pata_amd.c')
-rw-r--r--drivers/ata/pata_amd.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index b3f60fdb02d0..3293cf9a7eb5 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -25,7 +25,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_amd"
-#define DRV_VERSION "0.2.2"
+#define DRV_VERSION "0.2.3"
/**
* timing_setup - shared timing computation and load
@@ -253,11 +253,22 @@ static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
static int nv_pre_reset(struct ata_port *ap) {
static const u8 bitmask[2] = {0x03, 0xC0};
+ static const struct pci_bits nv_enable_bits[] = {
+ { 0x50, 1, 0x02, 0x02 },
+ { 0x50, 1, 0x01, 0x01 }
+ };
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 ata66;
u16 udma;
+ if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no])) {
+ ata_port_disable(ap);
+ printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
+ return 0;
+ }
+
+
pci_read_config_byte(pdev, 0x52, &ata66);
if (ata66 & bitmask[ap->port_no])
ap->cbl = ATA_CBL_PATA80;