linux-kernel - [PATCH 07/13] staging: iio: tsl2x7x: simplify device id verification

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Message-Id: <20180421004153.19073-8-masneyb@onstation.org>
Date:   Fri, 20 Apr 2018 20:41:47 -0400
From:   Brian Masney <masneyb@...tation.org>
To:     jic23@...nel.org, linux-iio@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        linux-kernel@...r.kernel.org, Jon.Brenner@....com
Subject: [PATCH 07/13] staging: iio: tsl2x7x: simplify device id verification

This patch renames tsl2x7x_device_id() to tsl2x7x_device_id_verif(),
removes the unnecessary pointer on the id parameter, and only calls
the verification function once.

Signed-off-by: Brian Masney <masneyb@...tation.org>
---
 drivers/staging/iio/light/tsl2x7x.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
index d202bc7e1f4f..56730baea927 100644
--- a/drivers/staging/iio/light/tsl2x7x.c
+++ b/drivers/staging/iio/light/tsl2x7x.c
@@ -1277,22 +1277,22 @@ static DEVICE_ATTR_WO(in_proximity0_calibrate);
 static DEVICE_ATTR_RW(in_illuminance0_lux_table);
 
 /* Use the default register values to identify the Taos device */
-static int tsl2x7x_device_id(int *id, int target)
+static int tsl2x7x_device_id_verif(int id, int target)
 {
 	switch (target) {
 	case tsl2571:
 	case tsl2671:
 	case tsl2771:
-		return (*id & 0xf0) == TRITON_ID;
+		return (id & 0xf0) == TRITON_ID;
 	case tmd2671:
 	case tmd2771:
-		return (*id & 0xf0) == HALIBUT_ID;
+		return (id & 0xf0) == HALIBUT_ID;
 	case tsl2572:
 	case tsl2672:
 	case tmd2672:
 	case tsl2772:
 	case tmd2772:
-		return (*id & 0xf0) == SWORDFISH_ID;
+		return (id & 0xf0) == SWORDFISH_ID;
 	}
 
 	return -EINVAL;
@@ -1612,8 +1612,7 @@ static int tsl2x7x_probe(struct i2c_client *clientp,
 	if (ret < 0)
 		return ret;
 
-	if ((!tsl2x7x_device_id(&ret, id->driver_data)) ||
-	    (tsl2x7x_device_id(&ret, id->driver_data) == -EINVAL)) {
+	if (tsl2x7x_device_id_verif(ret, id->driver_data) <= 0) {
 		dev_info(&chip->client->dev,
 			 "%s: i2c device found does not match expected id\n",
 				__func__);
-- 
2.14.3