[PATCH 4/4] i2c-dev: Adjust checks for null pointers in three functions

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Fri, 23 Sep 2016 21:30:20 +0200
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The script "checkpatch.pl" can point information out like the following.

Comparison to NULL could be written !…

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/i2c/i2c-dev.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 7d3e3ca..8f7eddd 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -147,7 +147,7 @@ static ssize_t i2cdev_read(struct file *file, char __user 
*buf, size_t count,
                count = 8192;
 
        tmp = kmalloc(count, GFP_KERNEL);
-       if (tmp == NULL)
+       if (!tmp)
                return -ENOMEM;
 
        pr_debug("i2c-dev: i2c-%d reading %zu bytes.\n",
@@ -263,7 +263,7 @@ static noinline int i2cdev_ioctl_rdwr(struct i2c_client 
*client,
        data_ptrs = kmalloc_array(rdwr_arg.nmsgs,
                                  sizeof(*data_ptrs),
                                  GFP_KERNEL);
-       if (data_ptrs == NULL) {
+       if (!data_ptrs) {
                kfree(rdwr_pa);
                return -ENOMEM;
        }
@@ -374,7 +374,7 @@ static noinline int i2cdev_ioctl_smbus(struct i2c_client 
*client,
                                      client->flags, data_arg.read_write,
                                      data_arg.command, data_arg.size, NULL);
 
-       if (data_arg.data == NULL) {
+       if (!data_arg.data) {
                dev_dbg(&client->adapter->dev,
                        "data is NULL pointer in ioctl I2C_SMBUS.\n");
                return -EINVAL;
-- 
2.10.0