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Commit 3dd843e1 authored by Marek Belisko's avatar Marek Belisko Committed by Sebastian Reichel
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bq27000: report missing device better. 



One an hdq buss, a missing device reads as 0xff, not -1.
So do a translation to allow detecting of a missing bus.

Signed-off-by: default avatarNeilBrown <neilb@suse.de>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent 1cb82fdb

drivers/power/bq27x00_battery.c

+3 −0
Original line number Diff line number Diff line
@@ -416,6 +416,9 @@ static void bq27x00_update(struct bq27x00_device_info *di) 
	bool is_bq27425 = di->chip == BQ27425;



	cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, !is_bq27500);

	if ((cache.flags & 0xff) == 0xff)

		/* read error */

		cache.flags = -1;

	if (cache.flags >= 0) {

		if (!is_bq27500 && !is_bq27425

				&& (cache.flags & BQ27000_FLAG_CI)) {