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IPMI: fix comparison in demangle_device_id 

Coverity spotted some incorrect code in a recent change to the IPMI driver;
this patch make sure the data is really long enough to pull the
manufacturer id and product id out of a get device id message.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Adrian Bunk <bunk@kernel.org>
Cc: Stian Jordet <liste@jordet.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Corey Minyard 2007-10-29 14:37:13 -07:00 committed by Linus Torvalds
parent cc5f916e90
commit 64e862a579
1 changed files with 1 additions and 1 deletions
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2
include/linux/ipmi_smi.h
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@ -173,7 +173,7 @@ static inline int ipmi_demangle_device_id(const unsigned char *data,
id->firmware_revision_2 = data[3]; id->firmware_revision_2 = data[3];
id->ipmi_version = data[4]; id->ipmi_version = data[4];
id->additional_device_support = data[5]; id->additional_device_support = data[5];
if (data_len >= 6) { if (data_len >= 11) {
id->manufacturer_id = (data[6] | (data[7] << 8) | id->manufacturer_id = (data[6] | (data[7] << 8) |
(data[8] << 16)); (data[8] << 16));
id->product_id = data[9] | (data[10] << 8); id->product_id = data[9] | (data[10] << 8);