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| author | Ben Hutchings <ben@decadent.org.uk> | 2010-04-03 19:37:23 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-05-19 08:37:58 +0100 |
| commit | 3a8663ee6171e1e61f5c139ed65aa0a769380f00 (patch) | |
| tree | 1950967276af3cc4579c20a7ab925d8c7ecf04fb /drivers/pci/dmar.c | |
| parent | 92946bc72f2e74c3281b7fc12be9704d455fb3ed (diff) | |
| download | lwn-3a8663ee6171e1e61f5c139ed65aa0a769380f00.tar.gz lwn-3a8663ee6171e1e61f5c139ed65aa0a769380f00.zip | |
intel-iommu: Combine the BIOS DMAR table warning messages
We have nearly the same code for warnings repeated four times. Move
it into a separate function.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/pci/dmar.c')
| -rw-r--r-- | drivers/pci/dmar.c | 48 |
1 files changed, 14 insertions, 34 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index 7771b2dd5978..1959cdadad51 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -618,7 +618,15 @@ int __init dmar_table_init(void) return 0; } -static int bios_warned; +static void warn_invalid_dmar(u64 addr, const char *message) +{ + WARN_ONCE(1, "Your BIOS is broken; DMAR reported at address %llx%s!\n" + "BIOS vendor: %s; Ver: %s; Product Version: %s\n", + addr, message, + dmi_get_system_info(DMI_BIOS_VENDOR), + dmi_get_system_info(DMI_BIOS_VERSION), + dmi_get_system_info(DMI_PRODUCT_VERSION)); +} int __init check_zero_address(void) { @@ -644,13 +652,7 @@ int __init check_zero_address(void) drhd = (void *)entry_header; if (!drhd->address) { - /* Promote an attitude of violence to a BIOS engineer today */ - WARN(1, "Your BIOS is broken; DMAR reported at address zero!\n" - "BIOS vendor: %s; Ver: %s; Product Version: %s\n", - dmi_get_system_info(DMI_BIOS_VENDOR), - dmi_get_system_info(DMI_BIOS_VERSION), - dmi_get_system_info(DMI_PRODUCT_VERSION)); - bios_warned = 1; + warn_invalid_dmar(0, ""); goto failed; } @@ -663,14 +665,8 @@ int __init check_zero_address(void) ecap = dmar_readq(addr + DMAR_ECAP_REG); early_iounmap(addr, VTD_PAGE_SIZE); if (cap == (uint64_t)-1 && ecap == (uint64_t)-1) { - /* Promote an attitude of violence to a BIOS engineer today */ - WARN(1, "Your BIOS is broken; DMAR reported at address %llx returns all ones!\n" - "BIOS vendor: %s; Ver: %s; Product Version: %s\n", - drhd->address, - dmi_get_system_info(DMI_BIOS_VENDOR), - dmi_get_system_info(DMI_BIOS_VERSION), - dmi_get_system_info(DMI_PRODUCT_VERSION)); - bios_warned = 1; + warn_invalid_dmar(drhd->address, + " returns all ones"); goto failed; } } @@ -735,14 +731,7 @@ int alloc_iommu(struct dmar_drhd_unit *drhd) int msagaw = 0; if (!drhd->reg_base_addr) { - if (!bios_warned) { - WARN(1, "Your BIOS is broken; DMAR reported at address zero!\n" - "BIOS vendor: %s; Ver: %s; Product Version: %s\n", - dmi_get_system_info(DMI_BIOS_VENDOR), - dmi_get_system_info(DMI_BIOS_VERSION), - dmi_get_system_info(DMI_PRODUCT_VERSION)); - bios_warned = 1; - } + warn_invalid_dmar(0, ""); return -EINVAL; } @@ -762,16 +751,7 @@ int alloc_iommu(struct dmar_drhd_unit *drhd) iommu->ecap = dmar_readq(iommu->reg + DMAR_ECAP_REG); if (iommu->cap == (uint64_t)-1 && iommu->ecap == (uint64_t)-1) { - if (!bios_warned) { - /* Promote an attitude of violence to a BIOS engineer today */ - WARN(1, "Your BIOS is broken; DMAR reported at address %llx returns all ones!\n" - "BIOS vendor: %s; Ver: %s; Product Version: %s\n", - drhd->reg_base_addr, - dmi_get_system_info(DMI_BIOS_VENDOR), - dmi_get_system_info(DMI_BIOS_VERSION), - dmi_get_system_info(DMI_PRODUCT_VERSION)); - bios_warned = 1; - } + warn_invalid_dmar(drhd->reg_base_addr, " returns all ones"); goto err_unmap; } |