linux-kernel - [PATCH] ARM: mach-s3c24xx: Fix boolean expressions in osiris_dvs

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Date:   Thu, 3 Jan 2019 14:14:08 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Ben Dooks <ben@...tec.co.uk>, Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Russell King <linux@...linux.org.uk>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] ARM: mach-s3c24xx: Fix boolean expressions in
 osiris_dvs_notify

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

diff --git a/arch/arm/mach-s3c24xx/mach-osiris-dvs.c b/arch/arm/mach-s3c24xx/mach-osiris-dvs.c
index 058ce73137e8..ccbd7b7965ca 100644
--- 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 notifier_block *nb,
 
 	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);
-- 
2.20.1