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authorJean Delvare <jdelvare@suse.de>2016-01-15 22:08:44 +0100
committerJean Delvare <jdelvare@suse.de>2016-01-15 22:08:44 +0100
commit96e239434c629491e57a359a2f876b6d41476336 (patch)
tree8392ace0b261fa74908eb9fc857459601bfc3764 /drivers/firmware/dmi_scan.c
parentLinux 4.4 (diff)
downloadlinux-96e239434c629491e57a359a2f876b6d41476336.tar.xz
linux-96e239434c629491e57a359a2f876b6d41476336.zip
firmware: dmi_scan: Optimize dmi_save_extended_devices
Calling dmi_string_nosave isn't cheap, so avoid calling it twice in a row for the same string. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Jordan Hargrave <jordan_hargrave@dell.com> Cc: Narendra K <narendra_k@dell.com>
Diffstat (limited to 'drivers/firmware/dmi_scan.c')
-rw-r--r--drivers/firmware/dmi_scan.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 0e08e665f715..28b2f0af35fd 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -345,15 +345,17 @@ static void __init dmi_save_dev_onboard(int instance, int segment, int bus,
static void __init dmi_save_extended_devices(const struct dmi_header *dm)
{
+ const char *name;
const u8 *d = (u8 *) dm + 5;
/* Skip disabled device */
if ((*d & 0x80) == 0)
return;
+ name = dmi_string_nosave(dm, *(d - 1));
dmi_save_dev_onboard(*(d+1), *(u16 *)(d+2), *(d+4), *(d+5),
- dmi_string_nosave(dm, *(d-1)));
- dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d - 1)));
+ name);
+ dmi_save_one_device(*d & 0x7f, name);
}
static void __init count_mem_devices(const struct dmi_header *dm, void *v)