All of lore.kernel.org
 help / color / mirror / Atom feed
From: Salah Triki <salah.triki@gmail.com>
To: Vinod Koul <vkoul@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Romain Perier <romain.perier@gmail.com>,
	Allen Pais <allen.lkml@gmail.com>,
	gregkh@linuxfoundation.org
Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RESEND] ppc4xx: replace sscanf() by kstrtoul()
Date: Thu, 22 Jul 2021 18:16:30 +0100	[thread overview]
Message-ID: <20210722171630.GA4911@pc> (raw)

Fix the checkpatch.pl warning: "Prefer kstrto<type> to single variable sscanf".

Signed-off-by: Salah Triki <salah.triki@gmail.com>
---
 drivers/dma/ppc4xx/adma.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c
index df7704053d91..e2b5129c5f84 100644
--- a/drivers/dma/ppc4xx/adma.c
+++ b/drivers/dma/ppc4xx/adma.c
@@ -4319,6 +4319,7 @@ static ssize_t enable_store(struct device_driver *dev, const char *buf,
 			    size_t count)
 {
 	unsigned long val;
+	int err;
 
 	if (!count || count > 11)
 		return -EINVAL;
@@ -4327,7 +4328,10 @@ static ssize_t enable_store(struct device_driver *dev, const char *buf,
 		return -EFAULT;
 
 	/* Write a key */
-	sscanf(buf, "%lx", &val);
+	err = kstrtoul(buf, 16, &val);
+	if (err)
+		return err;
+
 	dcr_write(ppc440spe_mq_dcr_host, DCRN_MQ0_XORBA, val);
 	isync();
 
@@ -4368,7 +4372,7 @@ static ssize_t poly_store(struct device_driver *dev, const char *buf,
 			  size_t count)
 {
 	unsigned long reg, val;
-
+	int err;
 #ifdef CONFIG_440SP
 	/* 440SP uses default 0x14D polynomial only */
 	return -EINVAL;
@@ -4378,7 +4382,9 @@ static ssize_t poly_store(struct device_driver *dev, const char *buf,
 		return -EINVAL;
 
 	/* e.g., 0x14D or 0x11D */
-	sscanf(buf, "%lx", &val);
+	err = kstrtoul(buf, 16, &val);
+	if (err)
+		return err;
 
 	if (val & ~0x1FF)
 		return -EINVAL;
-- 
2.25.1


             reply	other threads:[~2021-07-22 17:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-22 17:16 Salah Triki [this message]
  -- strict thread matches above, loose matches on Subject: below --
2021-07-10 16:54 [RESEND] ppc4xx: replace sscanf() by kstrtoul() Salah Triki
2021-07-28  7:11 ` Vinod Koul

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210722171630.GA4911@pc \
    --to=salah.triki@gmail.com \
    --cc=allen.lkml@gmail.com \
    --cc=dmaengine@vger.kernel.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=krzk@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=romain.perier@gmail.com \
    --cc=vkoul@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.