static void pcan_set_leds(struct pcan_pccard *card, u8 led_mask, u8 state)
{
	u8 ccr = card->ccr;
	int i;

	for (i = 0; i < card->chan_count; i++)
		if (led_mask & PCC_LED(i)) {
			/* clear corresponding led bits in ccr */
			ccr &= ~PCC_CCR_LED_MASK_CHAN(i);
			/* then set new bits */
			ccr |= PCC_CCR_LED_CHAN(state, i);
		}

	/* real write only if something has changed in ccr */
	pcan_write_reg(card, PCC_CCR, ccr);
}
static void pcan_set_leds(struct pcan_pccard *card, u8 led_mask, u8 state)
{
	u8 ccr = card->ccr;
	int i;

	for (i = 0; i < card->chan_count; i++)
		if (led_mask & PCC_LED(i)) {
			
			ccr &= ~PCC_CCR_LED_MASK_CHAN(i);
			
			ccr |= PCC_CCR_LED_CHAN(state, i);
		}

	
	pcan_write_reg(card, PCC_CCR, ccr);
}