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| author | Huang Ying <ying.huang@intel.com> | 2011-07-13 13:14:12 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2011-07-13 23:27:56 -0400 |
| commit | 4d2b2956ef1113f1cc43e98e947c20d9c7d2712c (patch) | |
| tree | f19e664132a6fe8173c03bb3be97ecf4a125185a /drivers | |
| parent | 8d86e5f91440aa56a5df516bf58fe3883552ad56 (diff) | |
| download | linux-stable-4d2b2956ef1113f1cc43e98e947c20d9c7d2712c.tar.gz linux-stable-4d2b2956ef1113f1cc43e98e947c20d9c7d2712c.tar.bz2 linux-stable-4d2b2956ef1113f1cc43e98e947c20d9c7d2712c.zip | |
ACPI, APEI, HEST, Detect duplicated hardware error source ID
The firmware on some machine will report duplicated hardware error
source ID in HEST. This is considered a firmware bug. To provide
better warning message, this patch adds duplicated hardware error
source ID detecting and corresponding printk.
This patch fixes #37412 on kernel bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=37412
Reported-by: marconifabio@ubuntu-it.org
Signed-off-by: Huang Ying <ying.huang@intel.com>
Tested-by: Mathias <janedo.spam@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/apei/hest.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index abda3786a5d7..181bc2f7bb74 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -139,13 +139,23 @@ static int __init hest_parse_ghes(struct acpi_hest_header *hest_hdr, void *data) { struct platform_device *ghes_dev; struct ghes_arr *ghes_arr = data; - int rc; + int rc, i; if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR) return 0; if (!((struct acpi_hest_generic *)hest_hdr)->enabled) return 0; + for (i = 0; i < ghes_arr->count; i++) { + struct acpi_hest_header *hdr; + ghes_dev = ghes_arr->ghes_devs[i]; + hdr = *(struct acpi_hest_header **)ghes_dev->dev.platform_data; + if (hdr->source_id == hest_hdr->source_id) { + pr_warning(FW_WARN HEST_PFX "Duplicated hardware error source ID: %d.\n", + hdr->source_id); + return -EIO; + } + } ghes_dev = platform_device_alloc("GHES", hest_hdr->source_id); if (!ghes_dev) return -ENOMEM; |