linux-kernel - [PATCH v2 17/17] iio: accel: mma9553: use unsigned counters

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Message-Id: <1428939664-12503-18-git-send-email-irina.tirdea@intel.com>
Date:	Mon, 13 Apr 2015 18:41:04 +0300
From:	Irina Tirdea <irina.tirdea@...el.com>
To:	Jonathan Cameron <jic23@...nel.org>, linux-iio@...r.kernel.org,
	Hartmut Knaack <knaack.h@....de>
Cc:	linux-kernel@...r.kernel.org, Vlad Dogaru <vlad.dogaru@...el.com>,
	Irina Tirdea <irina.tirdea@...el.com>
Subject: [PATCH v2 17/17] iio: accel: mma9553: use unsigned counters

Use unsigned counters instead of signed when all the
possible values are positive.

Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
Suggested-by: Hartmut Knaack <knaack.h@....de>
---
 drivers/iio/accel/mma9551_core.c | 12 +++++++-----
 drivers/iio/accel/mma9553.c      |  8 ++++----
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/iio/accel/mma9551_core.c b/drivers/iio/accel/mma9551_core.c
index c34c5ce..44b8243 100644
--- a/drivers/iio/accel/mma9551_core.c
+++ b/drivers/iio/accel/mma9551_core.c
@@ -115,8 +115,8 @@ struct mma9551_version_info {
 
 static int mma9551_transfer(struct i2c_client *client,
 			    u8 app_id, u8 command, u16 offset,
-			    u8 *inbytes, int num_inbytes,
-			    u8 *outbytes, int num_outbytes)
+			    u8 *inbytes, u8 num_inbytes,
+			    u8 *outbytes, u8 num_outbytes)
 {
 	struct mma9551_mbox_request req;
 	struct mma9551_mbox_response rsp;
@@ -387,7 +387,8 @@ EXPORT_SYMBOL(mma9551_read_status_word);
 int mma9551_read_config_words(struct i2c_client *client, u8 app_id,
 			      u16 reg, u8 len, u16 *buf)
 {
-	int ret, i;
+	int ret;
+	u8 i;
 	__be16 be_buf[MMA9551_MAX_MAILBOX_DATA_REGS / 2];
 
 	if (len > ARRAY_SIZE(be_buf)) {
@@ -426,7 +427,8 @@ EXPORT_SYMBOL(mma9551_read_config_words);
 int mma9551_read_status_words(struct i2c_client *client, u8 app_id,
 			      u16 reg, u8 len, u16 *buf)
 {
-	int ret, i;
+	int ret;
+	u8 i;
 	__be16 be_buf[MMA9551_MAX_MAILBOX_DATA_REGS / 2];
 
 	if (len > ARRAY_SIZE(be_buf)) {
@@ -465,7 +467,7 @@ EXPORT_SYMBOL(mma9551_read_status_words);
 int mma9551_write_config_words(struct i2c_client *client, u8 app_id,
 			       u16 reg, u8 len, u16 *buf)
 {
-	int i;
+	u8 i;
 	__be16 be_buf[(MMA9551_MAX_MAILBOX_DATA_REGS - 1) / 2];
 
 	if (len > ARRAY_SIZE(be_buf)) {
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
index a605280..ad587ec 100644
--- a/drivers/iio/accel/mma9553.c
+++ b/drivers/iio/accel/mma9553.c
@@ -189,7 +189,7 @@ struct mma9553_data {
 	struct mutex mutex;
 	struct mma9553_conf_regs conf;
 	struct mma9553_event events[MMA9553_EVENTS_INFO_SIZE];
-	int num_events;
+	u8 num_events;
 	u8 gpio_bitnum;
 	/*
 	 * This is used for all features that depend on step count:
@@ -230,7 +230,7 @@ static enum iio_modifier mma9553_activity_to_mod(enum activity_level activity)
 
 static void mma9553_init_events(struct mma9553_data *data)
 {
-	int i;
+	u8 i;
 
 	data->num_events = MMA9553_EVENTS_INFO_SIZE;
 	for (i = 0; i < data->num_events; i++) {
@@ -244,7 +244,7 @@ static struct mma9553_event *mma9553_get_event(struct mma9553_data *data,
 					       enum iio_modifier mod,
 					       enum iio_event_direction dir)
 {
-	int i;
+	u8 i;
 
 	for (i = 0; i < data->num_events; i++)
 		if (data->events[i].info->type == type &&
@@ -259,7 +259,7 @@ static bool mma9553_is_any_event_enabled(struct mma9553_data *data,
 					 bool check_type,
 					 enum iio_chan_type type)
 {
-	int i;
+	u8 i;
 
 	for (i = 0; i < data->num_events; i++)
 		if ((check_type && data->events[i].info->type == type &&
-- 
1.9.1

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