linux-kernel - [PATCH v2] staging: most: NULL comparison style

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Message-Id: <1440424172-28629-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Mon, 24 Aug 2015 19:19:32 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	Fabio Estevam <festevam@...il.com>,
	Frans Klaver <fransklaver@...il.com>,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH v2] staging: most: NULL comparison style

checkpatch complains when a variable comparison to NULL is written as:
variable == NULL or variable != NULL.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---
 drivers/staging/most/aim-cdev/cdev.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/most/aim-cdev/cdev.c b/drivers/staging/most/aim-cdev/cdev.c
index 0a13d8d..7b637f3 100644
--- a/drivers/staging/most/aim-cdev/cdev.c
+++ b/drivers/staging/most/aim-cdev/cdev.c
@@ -174,7 +174,7 @@ static ssize_t aim_write(struct file *filp, const char __user *buf,
 			    channel->wq,
 			    (mbo = most_get_mbo(channel->iface,
 						channel->channel_id)) ||
-			    (channel->dev == NULL)))
+			    (!channel->dev)))
 			return -ERESTARTSYS;
 	}
 
@@ -230,12 +230,12 @@ aim_read(struct file *filp, char __user *buf, size_t count, loff_t *offset)
 		goto start_copy;
 	}
 	while ((0 == kfifo_out(&channel->fifo, &mbo, 1))
-	       && (channel->dev != NULL)) {
+	       && (channel->dev)) {
 		if (filp->f_flags & O_NONBLOCK)
 			return -EAGAIN;
 		if (wait_event_interruptible(channel->wq,
 					     (!kfifo_is_empty(&channel->fifo) ||
-					      (channel->dev == NULL))))
+					      (!channel->dev))))
 			return -ERESTARTSYS;
 	}
 
@@ -300,7 +300,7 @@ static int aim_disconnect_channel(struct most_interface *iface, int channel_id)
 	}
 
 	channel = get_channel(iface, channel_id);
-	if (channel == NULL)
+	if (!channel)
 		return -ENXIO;
 
 	mutex_lock(&channel->io_mutex);
@@ -337,7 +337,7 @@ static int aim_rx_completion(struct mbo *mbo)
 		return -EINVAL;
 
 	channel = get_channel(mbo->ifp, mbo->hdm_channel_id);
-	if (channel == NULL)
+	if (!channel)
 		return -ENXIO;
 
 	kfifo_in(&channel->fifo, &mbo, 1);
@@ -370,7 +370,7 @@ static int aim_tx_completion(struct most_interface *iface, int channel_id)
 	}
 
 	channel = get_channel(iface, channel_id);
-	if (channel == NULL)
+	if (!channel)
 		return -ENXIO;
 	wake_up_interruptible(&channel->wq);
 	return 0;
-- 
1.9.1

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