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Date: Wed, 01 Aug 2012 20:40:34 +0800 From: Axel Lin <axel.lin@...il.com> To: Bryan Wu <bryan.wu@...onical.com> Cc: "Milo(Woogyom) Kim" <milo.kim@...com>, Richard Purdie <rpurdie@...ys.net>, linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH RFT] leds: lp8788: Fix updating scale configuration bits We need to do left shift (cfg->num + LP8788_ISINK_SCALE_OFFSET) bits for updating scale configuration. Signed-off-by: Axel Lin <axel.lin@...il.com> --- Hi Milo, Current code of updating scale configuration bits looks wrong to me because the mask does not match the val. I don't have this hardware, can you test this patch? Thanks, Axel drivers/leds/leds-lp8788.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/leds/leds-lp8788.c b/drivers/leds/leds-lp8788.c index 53bd136..0ade6eb 100644 --- a/drivers/leds/leds-lp8788.c +++ b/drivers/leds/leds-lp8788.c @@ -63,7 +63,7 @@ static int lp8788_led_init_device(struct lp8788_led *led, /* scale configuration */ addr = LP8788_ISINK_CTRL; mask = 1 << (cfg->num + LP8788_ISINK_SCALE_OFFSET); - val = cfg->scale << cfg->num; + val = cfg->scale << (cfg->num + LP8788_ISINK_SCALE_OFFSET); ret = lp8788_update_bits(led->lp, addr, mask, val); if (ret) return ret; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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