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Additional ACPI update for v4.11-rc1 

This fixes an apparent, but actually artificial, resource conflict
 between the ACPI NVS memory region and the ACPI BERT (Boot Error
 Record Table) address range (Huang Ying).
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Merge tag 'acpi-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "This fixes an apparent, but actually artificial, resource conflict
  between the ACPI NVS memory region and the ACPI BERT (Boot Error
  Record Table) address range (Huang Ying)"

* tag 'acpi-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: APEI: Fix BERT resources conflict with ACPI NVS area
This commit is contained in:
Linus Torvalds 2017-03-02 17:38:30 -08:00
parent 080e4168c0 0cb3b79efa
commit 3f80dd67c3
1 changed files with 12 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/acpi/apei/bert.c
View File

@ -97,6 +97,7 @@ static int __init bert_check_table(struct acpi_table_bert *bert_tab)
static int __init bert_init(void)
{
struct apei_resources bert_resources;
struct acpi_bert_region *boot_error_region;
struct acpi_table_bert *bert_tab;
unsigned int region_len;
@ -127,13 +128,14 @@ static int __init bert_init(void)
}
region_len = bert_tab->region_length;
if (!request_mem_region(bert_tab->address, region_len, "APEI BERT")) {
pr_err("Can't request iomem region <%016llx-%016llx>.\n",
(unsigned long long)bert_tab->address,
(unsigned long long)bert_tab->address + region_len - 1);
return -EIO;
}
apei_resources_init(&bert_resources);
rc = apei_resources_add(&bert_resources, bert_tab->address,
region_len, true);
if (rc)
return rc;
rc = apei_resources_request(&bert_resources, "APEI BERT");
if (rc)
goto out_fini;
boot_error_region = ioremap_cache(bert_tab->address, region_len);
if (boot_error_region) {
bert_print_all(boot_error_region, region_len);
@ -142,7 +144,9 @@ static int __init bert_init(void)
rc = -ENOMEM;
}
release_mem_region(bert_tab->address, region_len);
apei_resources_release(&bert_resources);
out_fini:
apei_resources_fini(&bert_resources);
return rc;
}