X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fi2c%2Fchips%2Ftsl2550.c;h=b96f3025e588245fc498fcaddb78e706bfe03c6e;hb=b9356c53ba2f593081e5aa45eb67adcce243d1c0;hp=1a9cc135219f4a5ea613c8da9819676cf19da0f4;hpb=c15a2434ed4868cad99278ac4d4ae4de9de62e02;p=pandora-kernel.git

diff --git a/drivers/i2c/chips/tsl2550.c b/drivers/i2c/chips/tsl2550.c
index 1a9cc135219f..b96f3025e588 100644
--- a/drivers/i2c/chips/tsl2550.c
+++ b/drivers/i2c/chips/tsl2550.c
@@ -27,7 +27,7 @@
 #include <linux/delay.h>
 
 #define TSL2550_DRV_NAME	"tsl2550"
-#define DRIVER_VERSION		"1.1.1"
+#define DRIVER_VERSION		"1.1.2"
 
 /*
  * Defines
@@ -189,13 +189,16 @@ static int tsl2550_calculate_lux(u8 ch0, u8 ch1)
 	u8 r = 128;
 
 	/* Avoid division by 0 and count 1 cannot be greater than count 0 */
-	if (c0 && (c1 <= c0))
-		r = c1 * 128 / c0;
+	if (c1 <= c0)
+		if (c0) {
+			r = c1 * 128 / c0;
+
+			/* Calculate LUX */
+			lux = ((c0 - c1) * ratio_lut[r]) / 256;
+		} else
+			lux = 0;
 	else
-		return -1;
-
-	/* Calculate LUX */
-	lux = ((c0 - c1) * ratio_lut[r]) / 256;
+		return -EAGAIN;
 
 	/* LUX range check */
 	return lux > TSL2550_MAX_LUX ? TSL2550_MAX_LUX : lux;