linux-kernel - [PATCH v1] platform/x86: wmi: Replace kmalloc + sprintf() with kasprintf()

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Date:   Fri, 16 Feb 2018 17:40:24 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Darren Hart <dvhart@...radead.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1] platform/x86: wmi: Replace kmalloc + sprintf() with kasprintf()

kasprintf() does the job of two: kmalloc() and sprintf().
Replace two calls with one.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/platform/x86/wmi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index c0c8945603cb..4e76ffcb5394 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -933,12 +933,11 @@ static int wmi_dev_probe(struct device *dev)
 			goto probe_failure;
 		}
 
-		buf = kmalloc(strlen(wdriver->driver.name) + 5, GFP_KERNEL);
+		buf = kasprintf(GFP_KERNEL, "wmi/%s", wdriver->driver.name);
 		if (!buf) {
 			ret = -ENOMEM;
 			goto probe_string_failure;
 		}
-		sprintf(buf, "wmi/%s", wdriver->driver.name);
 		wblock->char_dev.minor = MISC_DYNAMIC_MINOR;
 		wblock->char_dev.name = buf;
 		wblock->char_dev.fops = &wmi_fops;
-- 
2.16.1