linux-kernel - [PATCH] s390: kernel: Delete an error message for a failed memory allocation in cpcmd()

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Message-ID: <225c2a55-eb6e-35cb-285a-cb664a34bc7e@users.sourceforge.net>
Date:   Thu, 25 May 2017 19:18:03 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-s390@...r.kernel.org,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] s390: kernel: Delete an error message for a failed memory
 allocation in cpcmd()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 25 May 2017 19:09:50 +0200

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 arch/s390/kernel/cpcmd.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c
index 9f0e4a2785f7..2f9c97813846 100644
--- a/arch/s390/kernel/cpcmd.c
+++ b/arch/s390/kernel/cpcmd.c
@@ -95,10 +95,9 @@ int cpcmd(const char *cmd, char *response, int rlen, int *response_code)
 	if ((virt_to_phys(response) != (unsigned long) response) ||
 			(((unsigned long)response + rlen) >> 31)) {
 		lowbuf = kmalloc(rlen, GFP_KERNEL | GFP_DMA);
-		if (!lowbuf) {
-			pr_warn("The cpcmd kernel function failed to allocate a response buffer\n");
+		if (!lowbuf)
 			return -ENOMEM;
-		}
+
 		spin_lock_irqsave(&cpcmd_lock, flags);
 		len = __cpcmd(cmd, lowbuf, rlen, response_code);
 		spin_unlock_irqrestore(&cpcmd_lock, flags);
-- 
2.13.0