diff options
author | Jean Delvare <jdelvare@suse.de> | 2019-12-03 11:20:37 +0100 |
---|---|---|
committer | Jean Delvare <jdelvare@suse.de> | 2019-12-03 11:20:37 +0100 |
commit | 7c2378800cf7ac87e2663afa7f39d102871f0c28 (patch) | |
tree | 866e301cb6f697ca3dff16a716a6a3d8465cda5f /drivers/firmware/dmi_scan.c | |
parent | 9e0afe3910ff7e5493c5d8ebe3b499994b5e0272 (diff) | |
download | linux-7c2378800cf7ac87e2663afa7f39d102871f0c28.tar.gz linux-7c2378800cf7ac87e2663afa7f39d102871f0c28.tar.bz2 linux-7c2378800cf7ac87e2663afa7f39d102871f0c28.zip |
firmware: dmi: Add dmi_memdev_handle
Add a utility function dmi_memdev_handle() which returns the DMI
handle associated with a given memory slot. This will allow kernel
drivers to iterate over the memory slots.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Diffstat (limited to 'drivers/firmware/dmi_scan.c')
-rw-r--r-- | drivers/firmware/dmi_scan.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index 6f28e515fdc0..2045566d622f 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -1151,3 +1151,19 @@ u8 dmi_memdev_type(u16 handle) return 0x0; /* Not a valid value */ } EXPORT_SYMBOL_GPL(dmi_memdev_type); + +/** + * dmi_memdev_handle - get the DMI handle of a memory slot + * @slot: slot number + * + * Return the DMI handle associated with a given memory slot, or %0xFFFF + * if there is no such slot. + */ +u16 dmi_memdev_handle(int slot) +{ + if (dmi_memdev && slot >= 0 && slot < dmi_memdev_nr) + return dmi_memdev[slot].handle; + + return 0xffff; /* Not a valid value */ +} +EXPORT_SYMBOL_GPL(dmi_memdev_handle); |