diff options
Diffstat (limited to 'drivers/pnp')
| -rw-r--r-- | drivers/pnp/quirks.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c index e903b8c2b1fa..4065139753b6 100644 --- a/drivers/pnp/quirks.c +++ b/drivers/pnp/quirks.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/pnp.h> #include <linux/io.h> +#include <linux/dmi.h> #include <linux/kallsyms.h> #include "base.h" @@ -108,6 +109,46 @@ static void quirk_sb16audio_resources(struct pnp_dev *dev) "pnp: SB audio device quirk - increasing port range\n"); } +static void quirk_supermicro_h8dce_system(struct pnp_dev *dev) +{ + int i; + static struct dmi_system_id supermicro_h8dce[] = { + { + .ident = "Supermicro H8DCE", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"), + DMI_MATCH(DMI_PRODUCT_NAME, "H8DCE"), + }, + }, + { } + }; + + if (!dmi_check_system(supermicro_h8dce)) + return; + + /* + * On the Supermicro H8DCE, there's a system device with resources + * that overlap BAR 6 of the built-in SATA PCI adapter. If the PNP + * system device claims them, the sata_nv driver won't be able to. + * More details at: + * https://bugzilla.redhat.com/show_bug.cgi?id=280641 + * https://bugzilla.redhat.com/show_bug.cgi?id=313491 + * http://lkml.org/lkml/2008/1/9/449 + * http://thread.gmane.org/gmane.linux.acpi.devel/27312 + */ + for (i = 0; i < PNP_MAX_MEM; i++) { + if (pnp_mem_valid(dev, i) && pnp_mem_len(dev, i) && + (pnp_mem_start(dev, i) & 0xdfef0000) == 0xdfef0000) { + dev_warn(&dev->dev, "disabling 0x%llx-0x%llx to prevent" + " conflict with sata_nv PCI device\n", + (unsigned long long) pnp_mem_start(dev, i), + (unsigned long long) (pnp_mem_start(dev, i) + + pnp_mem_len(dev, i) - 1)); + pnp_mem_flags(dev, i) = 0; + } + } +} + /* * PnP Quirks * Cards or devices that need some tweaking due to incomplete resource info @@ -128,6 +169,8 @@ static struct pnp_fixup pnp_fixups[] = { {"CTL0043", quirk_sb16audio_resources}, {"CTL0044", quirk_sb16audio_resources}, {"CTL0045", quirk_sb16audio_resources}, + {"PNP0c01", quirk_supermicro_h8dce_system}, + {"PNP0c02", quirk_supermicro_h8dce_system}, {""} }; |