diff options
Diffstat (limited to 'drivers/edac/ghes_edac.c')
| -rw-r--r-- | drivers/edac/ghes_edac.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c index 8d904df75ad8..68b6ee18bea6 100644 --- a/drivers/edac/ghes_edac.c +++ b/drivers/edac/ghes_edac.c @@ -38,6 +38,10 @@ static struct ghes_edac_pvt *ghes_pvt; */ static DEFINE_SPINLOCK(ghes_lock); +/* "ghes_edac.force_load=1" skips the platform check */ +static bool __read_mostly force_load; +module_param(force_load, bool, 0); + /* Memory Device - Type 17 of SMBIOS spec */ struct memdev_dmi_entry { u8 type; @@ -415,6 +419,14 @@ void ghes_edac_report_mem_error(struct ghes *ghes, int sev, spin_unlock_irqrestore(&ghes_lock, flags); } +/* + * Known systems that are safe to enable this module. + */ +static struct acpi_platform_list plat_list[] = { + {"HPE ", "Server ", 0, ACPI_SIG_FADT, all_versions}, + { } /* End */ +}; + int ghes_edac_register(struct ghes *ghes, struct device *dev) { bool fake = false; @@ -422,6 +434,12 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev) struct mem_ctl_info *mci; struct edac_mc_layer layers[1]; struct ghes_edac_dimm_fill dimm_fill; + int idx; + + /* Check if safe to enable on this system */ + idx = acpi_match_platform_list(plat_list); + if (!force_load && idx < 0) + return 0; /* * We have only one logical memory controller to which all DIMMs belong. @@ -460,17 +478,17 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev) mci->ctl_name = "ghes_edac"; mci->dev_name = "ghes"; - if (!fake) { + if (fake) { + pr_info("This system has a very crappy BIOS: It doesn't even list the DIMMS.\n"); + pr_info("Its SMBIOS info is wrong. It is doubtful that the error report would\n"); + pr_info("work on such system. Use this driver with caution\n"); + } else if (idx < 0) { pr_info("This EDAC driver relies on BIOS to enumerate memory and get error reports.\n"); pr_info("Unfortunately, not all BIOSes reflect the memory layout correctly.\n"); pr_info("So, the end result of using this driver varies from vendor to vendor.\n"); pr_info("If you find incorrect reports, please contact your hardware vendor\n"); pr_info("to correct its BIOS.\n"); pr_info("This system has %d DIMM sockets.\n", num_dimm); - } else { - pr_info("This system has a very crappy BIOS: It doesn't even list the DIMMS.\n"); - pr_info("Its SMBIOS info is wrong. It is doubtful that the error report would\n"); - pr_info("work on such system. Use this driver with caution\n"); } if (!fake) { |