linux-kernel - [PATCH 4.19 231/280] ARM: s3c24xx: Fix boolean expressions in osiris_dvs

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Message-Id: <20190322111337.237200366@linuxfoundation.org>
Date:   Fri, 22 Mar 2019 12:16:24 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 4.19 231/280] ARM: s3c24xx: Fix boolean expressions in osiris_dvs_notify

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gustavo A. R. Silva <gustavo@...eddedor.com>

commit e2477233145f2156434afb799583bccd878f3e9f upstream.

Fix boolean expressions by using logical AND operator '&&' instead of
bitwise operator '&'.

This issue was detected with the help of Coccinelle.

Fixes: 4fa084af28ca ("ARM: OSIRIS: DVS (Dynamic Voltage Scaling) supoort.")
Cc: stable@...r.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
[krzk: Fix -Wparentheses warning]
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/mach-s3c24xx/mach-osiris-dvs.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/arch/arm/mach-s3c24xx/mach-osiris-dvs.c
+++ b/arch/arm/mach-s3c24xx/mach-osiris-dvs.c
@@ -65,16 +65,16 @@ static int osiris_dvs_notify(struct noti
 
 	switch (val) {
 	case CPUFREQ_PRECHANGE:
-		if (old_dvs & !new_dvs ||
-		    cur_dvs & !new_dvs) {
+		if ((old_dvs && !new_dvs) ||
+		    (cur_dvs && !new_dvs)) {
 			pr_debug("%s: exiting dvs\n", __func__);
 			cur_dvs = false;
 			gpio_set_value(OSIRIS_GPIO_DVS, 1);
 		}
 		break;
 	case CPUFREQ_POSTCHANGE:
-		if (!old_dvs & new_dvs ||
-		    !cur_dvs & new_dvs) {
+		if ((!old_dvs && new_dvs) ||
+		    (!cur_dvs && new_dvs)) {
 			pr_debug("entering dvs\n");
 			cur_dvs = true;
 			gpio_set_value(OSIRIS_GPIO_DVS, 0);