linux-kernel - [PATCH v4 34/38] platform/x86: intel_pmc_ipc: Propagate error from kstrtoul()

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Date:   Tue, 21 Jan 2020 19:01:10 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Darren Hart <dvhart@...radead.org>,
        Lee Jones <lee.jones@...aro.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Zha Qipeng <qipeng.zha@...el.com>,
        "David E . Box" <david.e.box@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Mark Brown <broonie@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 34/38] platform/x86: intel_pmc_ipc: Propagate error from kstrtoul()

kstrtoul() already returns negative error if the input was not valid so
return it directly.

Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
---
 drivers/platform/x86/intel_pmc_ipc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c
index f912f2a40512..eb4d65768531 100644
--- a/drivers/platform/x86/intel_pmc_ipc.c
+++ b/drivers/platform/x86/intel_pmc_ipc.c
@@ -226,8 +226,9 @@ static ssize_t intel_pmc_ipc_northpeak_store(struct device *dev,
 	int subcmd;
 	int ret;
 
-	if (kstrtoul(buf, 0, &val))
-		return -EINVAL;
+	ret = kstrtoul(buf, 0, &val);
+	if (ret)
+		return ret;
 
 	if (val)
 		subcmd = 1;
-- 
2.24.1