From: SF Markus Elfring <elfring@users.sourceforge.net>
To: linux-media@vger.kernel.org,
Arvind Yadav <arvind.yadav.cs@gmail.com>,
Hans Verkuil <hans.verkuil@cisco.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>, kernel-janitors@vger.kernel.org
Subject: [PATCH 3/8] [media] ttusb_dec: Improve a size determination in three functions
Date: Thu, 14 Sep 2017 12:33:36 +0200 [thread overview]
Message-ID: <cba7587d-7aca-02b9-310d-27081ebc3f69@users.sourceforge.net> (raw)
In-Reply-To: <66b087d3-6dd3-1e1c-d33d-e34c9e2ffe25@users.sourceforge.net>
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 13 Sep 2017 19:56:38 +0200
* The script "checkpatch.pl" pointed information out like the following.
ERROR: do not use assignment in if condition
Thus fix a few source code places.
* Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/media/usb/ttusb-dec/ttusb_dec.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c
index 901cb221aad2..76070da3b7c7 100644
--- a/drivers/media/usb/ttusb-dec/ttusb_dec.c
+++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c
@@ -821,8 +821,8 @@ static void ttusb_dec_process_urb(struct urb *urb)
b = urb->transfer_buffer + d->offset;
length = d->actual_length;
- if ((frame = kmalloc(sizeof(struct urb_frame),
- GFP_ATOMIC))) {
+ frame = kmalloc(sizeof(*frame), GFP_ATOMIC);
+ if (frame) {
unsigned long flags;
memcpy(frame->data, b, length);
@@ -1073,8 +1073,8 @@ static int ttusb_dec_start_sec_feed(struct dvb_demux_feed *dvbdmxfeed)
if (!result) {
if (c_length == 2) {
- if (!(finfo = kmalloc(sizeof(struct filter_info),
- GFP_ATOMIC)))
+ finfo = kmalloc(sizeof(*finfo), GFP_ATOMIC);
+ if (!finfo)
return -ENOMEM;
finfo->stream_id = c[1];
@@ -1658,7 +1658,8 @@ static int ttusb_dec_probe(struct usb_interface *intf,
udev = interface_to_usbdev(intf);
- if (!(dec = kzalloc(sizeof(struct ttusb_dec), GFP_KERNEL))) {
+ dec = kzalloc(sizeof(*dec), GFP_KERNEL);
+ if (!dec) {
printk("%s: couldn't allocate memory.\n", __func__);
return -ENOMEM;
}
--
2.14.1
next prev parent reply other threads:[~2017-09-14 10:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-14 10:30 [PATCH 0/8] [media] ttusb_dec: Fine-tuning for some function implementations SF Markus Elfring
2017-09-14 10:31 ` [PATCH 1/8] [media] ttusb_dec: Use common error handling code in ttusb_dec_init_dvb() SF Markus Elfring
2017-09-14 10:32 ` [PATCH 2/8] [media] ttusb_dec: Adjust five checks for null pointers SF Markus Elfring
2017-09-14 10:33 ` SF Markus Elfring [this message]
2017-09-14 10:34 ` [PATCH 4/8] [media] ttusb_dec: Delete an error message for a failed memory allocation in ttusb_dec_probe() SF Markus Elfring
2017-09-14 10:35 ` [PATCH 5/8] [media] ttusb_dec: Move an assignment " SF Markus Elfring
2017-09-14 10:36 ` [PATCH 6/8] [media] ttusb_dec: Reduce the scope for three variables in ttusb_dec_process_urb() SF Markus Elfring
2017-09-14 10:37 ` [PATCH 7/8] [media] ttusb_dec: Add spaces for better code readability SF Markus Elfring
2017-09-14 10:38 ` [PATCH 8/8] [media] ttusb_dec: Delete four unwanted spaces SF Markus Elfring
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