diff options
| author | Jin Dongming <jin.dongming@np.css.fujitsu.com> | 2010-09-29 13:53:53 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-09-29 20:02:26 +0200 |
| commit | 1dd6b20e368765223c31569d364219785b24700b (patch) | |
| tree | 1217f73eff83cc603feb86cfd47f4a9876901758 /drivers/acpi/apei/hest.c | |
| parent | ACPI, APEI, Fix acpi_pre_map() return value (diff) | |
| download | linux-1dd6b20e368765223c31569d364219785b24700b.tar.xz linux-1dd6b20e368765223c31569d364219785b24700b.zip | |
ACPI, APEI, HEST Fix the unsuitable usage of platform_data
platform_data in hest_parse_ghes() is used for saving the address of entry
information of erst_tab. When the device is failed to be added, platform_data
will be freed by platform_device_put(). But the value saved in platform_data
should not be freed here. If it is done, it will make system panic.
So I think platform_data should save the address of allocated memory
which saves entry information of erst_tab.
This patch fixed it and I confirmed it on x86_64 next-tree.
v2:
Transport the pointer of hest_hdr to platform_data using
platform_device_add_data()
Signed-off-by: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/acpi/apei/hest.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 343168d18266..1a3508a7fe03 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -137,20 +137,23 @@ static int hest_parse_ghes_count(struct acpi_hest_header *hest_hdr, void *data) static int hest_parse_ghes(struct acpi_hest_header *hest_hdr, void *data) { - struct acpi_hest_generic *generic; struct platform_device *ghes_dev; struct ghes_arr *ghes_arr = data; int rc; if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR) return 0; - generic = (struct acpi_hest_generic *)hest_hdr; - if (!generic->enabled) + + if (!((struct acpi_hest_generic *)hest_hdr)->enabled) return 0; ghes_dev = platform_device_alloc("GHES", hest_hdr->source_id); if (!ghes_dev) return -ENOMEM; - ghes_dev->dev.platform_data = generic; + + rc = platform_device_add_data(ghes_dev, &hest_hdr, sizeof(void *)); + if (rc) + goto err; + rc = platform_device_add(ghes_dev); if (rc) goto err; |