Commit 7c237880 authored by Jean Delvare's avatar Jean Delvare
Browse files

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: default avatarJean Delvare <jdelvare@suse.de>
parent 9e0afe39

drivers/firmware/dmi_scan.c

+16 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/dmi.h

+2 −0
Original line number Diff line number Diff line
@@ -114,6 +114,7 @@ extern bool dmi_match(enum dmi_field f, const char *str); 
extern void dmi_memdev_name(u16 handle, const char **bank, const char **device);

extern u64 dmi_memdev_size(u16 handle);

extern u8 dmi_memdev_type(u16 handle);

extern u16 dmi_memdev_handle(int slot);



#else
@@ -144,6 +145,7 @@ static inline void dmi_memdev_name(u16 handle, const char **bank, 
		const char **device) { }

static inline u64 dmi_memdev_size(u16 handle) { return ~0ul; }

static inline u8 dmi_memdev_type(u16 handle) { return 0x0; }

static inline u16 dmi_memdev_handle(int slot) { return 0xffff; }

static inline const struct dmi_system_id *

	dmi_first_match(const struct dmi_system_id *list) { return NULL; }