From: Muhammad Falak R Wani <falakreyaz@gmail.com>
To: Johan Hovold <johan@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] USB: serial: cp210x: use kmemdup
Date: Thu, 19 May 2016 19:34:36 +0530 [thread overview]
Message-ID: <1463666682-16804-1-git-send-email-falakreyaz@gmail.com> (raw)
Use kmemdup when some other buffer is immediately copied into allocated
region. It replaces call to allocation followed by memcpy, by a single
call to kmemdup.
Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
---
drivers/usb/serial/cp210x.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 96a7078..4d6a5c6 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -496,12 +496,10 @@ static int cp210x_write_reg_block(struct usb_serial_port *port, u8 req,
void *dmabuf;
int result;
- dmabuf = kmalloc(bufsize, GFP_KERNEL);
+ dmabuf = kmemdup(buf, bufsize, GFP_KERNEL);
if (!dmabuf)
return -ENOMEM;
- memcpy(dmabuf, buf, bufsize);
-
result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
req, REQTYPE_HOST_TO_INTERFACE, 0,
port_priv->bInterfaceNumber, dmabuf, bufsize,
--
1.9.1
next reply other threads:[~2016-05-19 14:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-19 14:04 Muhammad Falak R Wani [this message]
2016-07-15 12:24 ` Johan Hovold
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