linux-kernel - [PATCH] usb: isp1760: Use kasprintf

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Message-Id: <1520446082-12264-1-git-send-email-himanshujha199640@gmail.com>
Date:   Wed,  7 Mar 2018 23:38:02 +0530
From:   Himanshu Jha <himanshujha199640@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     felipe.balbi@...ux.intel.com, johan@...nel.org,
        keescook@...omium.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Himanshu Jha <himanshujha199640@...il.com>
Subject: [PATCH] usb: isp1760: Use kasprintf

Use kasprintf instead of combination of kmalloc and sprintf and
therefore avoid unnecessary computation of string length.

Signed-off-by: Himanshu Jha <himanshujha199640@...il.com>
---
 drivers/usb/isp1760/isp1760-udc.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-udc.c b/drivers/usb/isp1760/isp1760-udc.c
index bac4ef5..c35b153 100644
--- a/drivers/usb/isp1760/isp1760-udc.c
+++ b/drivers/usb/isp1760/isp1760-udc.c
@@ -1456,12 +1456,10 @@ int isp1760_udc_register(struct isp1760_device *isp, int irq,
 		return ret;
 
 	devname = dev_name(isp->dev);
-	udc->irqname = kmalloc(strlen(devname) + 7, GFP_KERNEL);
+	udc->irqname = kasprintf(GFP_KERNEL, "%s (udc)", devname);
 	if (!udc->irqname)
 		return -ENOMEM;
 
-	sprintf(udc->irqname, "%s (udc)", devname);
-
 	ret = request_irq(irq, isp1760_udc_irq, IRQF_SHARED | irqflags,
 			  udc->irqname, udc);
 	if (ret < 0)
-- 
2.7.4