Commit 8314c212 authored Sep 17, 2018 by Andreas Kemnade Committed by Sebastian Reichel Sep 20, 2018

power: supply: twl4030_charger: fix charging current out-of-bounds



the charging current uses unsigned int variables, if we step back
if the current is still low, we would run into negative which
means setting the target to a huge value.
Better add checks here.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

parent ad1570d9

drivers/power/supply/twl4030_charger.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -420,6 +420,7 @@ static void twl4030_current_worker(struct work_struct *data)

		if (v < USB_MIN_VOLT) {
		/* Back up and stop adjusting. */
		if (bci->usb_cur >= USB_CUR_STEP)
		bci->usb_cur -= USB_CUR_STEP;
		bci->usb_cur_target = bci->usb_cur;
		} else if (bci->usb_cur >= bci->usb_cur_target \|\|

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