Commit 0bcb4e94 authored Jul 01, 2015 by David Collins

regulator: cpr3-regulator: BUG if an unsupported CPR fuse combo is found



The cpr3-regulator driver must perform voltage and quotient
adjustments which are tied to specific CPR fuse combinations.
Applying incorrect adjustments can lead to excess power
consumption or crashes.  Therefore, call BUG_ON() if the fuse
combo found on a given chip is not supported by the device tree
configurations of a cpr3-regulator device.

Change-Id: If5b539c9050975c9ce9c44d13e50a09be300bb3f
Signed-off-by: David Collins <collinsd@codeaurora.org>

parent 0938d30a

drivers/regulator/cpr3-util.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -404,8 +404,9 @@ int cpr3_parse_common_corner_data(struct cpr3_regulator *vreg,
		}

		if (vreg->fuse_combo >= max_fuse_combos) {
		cpr3_err(vreg, "device tree config supports fuse combos 0-%u but the hardware has config %d\n",
		cpr3_err(vreg, "device tree config supports fuse combos 0-%u but the hardware has combo %d\n",
		max_fuse_combos - 1, vreg->fuse_combo);
		BUG_ON(1);
		return -EINVAL;
		}