diff options
Diffstat (limited to 'drivers/ata/pata_cs5536.c')
| -rw-r--r-- | drivers/ata/pata_cs5536.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/drivers/ata/pata_cs5536.c b/drivers/ata/pata_cs5536.c index dec1b6c4b35..6c15a554efb 100644 --- a/drivers/ata/pata_cs5536.c +++ b/drivers/ata/pata_cs5536.c @@ -33,11 +33,11 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> -#include <linux/init.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/libata.h> #include <scsi/scsi_host.h> +#include <linux/dmi.h> #ifdef CONFIG_X86_32 #include <asm/msr.h> @@ -80,6 +80,21 @@ enum { IDE_ETC_UDMA_MASK = 0xc0, }; +/* Some Bachmann OT200 devices have a non working UDMA support due a + * missing resistor. + */ +static const struct dmi_system_id udma_quirk_dmi_table[] = { + { + .ident = "Bachmann electronic OT200", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Bachmann electronic"), + DMI_MATCH(DMI_PRODUCT_NAME, "OT200"), + DMI_MATCH(DMI_PRODUCT_VERSION, "1") + }, + }, + { } +}; + static int cs5536_read(struct pci_dev *pdev, int reg, u32 *val) { if (unlikely(use_msr)) { @@ -242,9 +257,23 @@ static int cs5536_init_one(struct pci_dev *dev, const struct pci_device_id *id) .port_ops = &cs5536_port_ops, }; - const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info }; + static const struct ata_port_info no_udma_info = { + .flags = ATA_FLAG_SLAVE_POSS, + .pio_mask = ATA_PIO4, + .port_ops = &cs5536_port_ops, + }; + + + const struct ata_port_info *ppi[2]; u32 cfg; + if (dmi_check_system(udma_quirk_dmi_table)) + ppi[0] = &no_udma_info; + else + ppi[0] = &info; + + ppi[1] = &ata_dummy_port_info; + if (use_msr) printk(KERN_ERR DRV_NAME ": Using MSR regs instead of PCI\n"); @@ -268,7 +297,7 @@ static struct pci_driver cs5536_pci_driver = { .id_table = cs5536, .probe = cs5536_init_one, .remove = ata_pci_remove_one, -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP .suspend = ata_pci_device_suspend, .resume = ata_pci_device_resume, #endif |