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authorIvan Khoronzhuk <ivan.khoronzhuk@linaro.org>2015-02-18 14:51:41 +0100
committerMatt Fleming <matt.fleming@intel.com>2015-02-18 15:47:30 +0100
commitce204e9a4bd82e9e6e7479bca8057e45aaac5c42 (patch)
treeec9560aaafedfe38173ead33219e32780761a0d0 /drivers/firmware
parentRevert "efi/libstub: Call get_memory_map() to obtain map and desc sizes" (diff)
downloadlinux-ce204e9a4bd82e9e6e7479bca8057e45aaac5c42.tar.xz
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firmware: dmi_scan: Fix dmi scan to handle "End of Table" structure
The dmi-sysfs should create "End of Table" entry, that is type 127. But after adding initial SMBIOS v3 support fc43026278b2 ("dmi: add support for SMBIOS 3.0 64-bit entry point") the 127-0 entry is not handled any more, as result it's not created in dmi sysfs for instance. This is important because the size of whole DMI table must correspond to sum of all DMI entry sizes. So move the end-of-table check after it's handled by dmi_table. Reviewed-by: Ard Biesheuvel <ard@linaro.org> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> Cc: <stable@vger.kernel.org> # v3.19 Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/dmi_scan.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index c5f7b4e9eb6c..a44b87c7b45c 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -93,12 +93,6 @@ static void dmi_table(u8 *buf, int len, int num,
const struct dmi_header *dm = (const struct dmi_header *)data;
/*
- * 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0]
- */
- if (dm->type == DMI_ENTRY_END_OF_TABLE)
- break;
-
- /*
* We want to know the total length (formatted area and
* strings) before decoding to make sure we won't run off the
* table in dmi_decode or dmi_string
@@ -108,6 +102,13 @@ static void dmi_table(u8 *buf, int len, int num,
data++;
if (data - buf < len - 1)
decode(dm, private_data);
+
+ /*
+ * 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0]
+ */
+ if (dm->type == DMI_ENTRY_END_OF_TABLE)
+ break;
+
data += 2;
i++;
}