drivers/firmware/dmi_scan.c: make dmi_name_in_vendors more focused
authorJean Delvare <khali@linux-fr.org>
Tue, 15 Nov 2011 22:36:09 +0000 (14:36 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 16 Nov 2011 00:41:51 +0000 (22:41 -0200)
commit66e13e66b6c4e5b2ecd6225e1f8437640cfb6498
treef84eda181ba94a3d9040e0f14399bd426dfc02be
parent5aecc85abdb9ac2b0e6548d13652a34142e7ae89
drivers/firmware/dmi_scan.c: make dmi_name_in_vendors more focused

The current implementation of dmi_name_in_vendors() is an invitation to
lazy coding and false positives [1].  Searching for a string in 8 know
what you're looking for, so you should know where to look.  strstr isn't
fast, especially when it fails, so we should avoid calling it when it
just can't succeed.

Looking at the current users of the function, it seems clear to me that
they are looking for a system or board vendor name, so let's limit
dmi_name_in_vendors to these two DMI fields.  This much better matches
the function name, BTW.

[1] We currently have code looking for short names in DMI data, such as
"IBM", "ASUS" or "Acer".  I let you guess what will happen the day other
vendors ship products named, for example, "SCHREIBMEISTER", "PEGASUS" or
"Acerola".

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/firmware/dmi_scan.c