gpio: pca953x: Remove explicit comparison with 0

There is no need to explicitly compare return code with 0.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

drivers/gpio/gpio-pca953x.c

@@ -850,12 +850,12 @@ static int device_pca95xx_init(struct pca953x_chip *chip, u32 invert)
 
 	ret = regcache_sync_region(chip->regmap, chip->regs->output,
 				   chip->regs->output + NBANK(chip));
-	if (ret != 0)
+	if (ret)
 		goto out;
 
 	ret = regcache_sync_region(chip->regmap, chip->regs->direction,
 				   chip->regs->direction + NBANK(chip));
-	if (ret != 0)
+	if (ret)
 		goto out;
 
 	/* set platform specific polarity inversion */
@@ -1061,14 +1061,14 @@ static int pca953x_regcache_sync(struct device *dev)
 	 */
 	ret = regcache_sync_region(chip->regmap, chip->regs->direction,
 				   chip->regs->direction + NBANK(chip));
-	if (ret != 0) {
+	if (ret) {
 		dev_err(dev, "Failed to sync GPIO dir registers: %d\n", ret);
 		return ret;
 	}
 
 	ret = regcache_sync_region(chip->regmap, chip->regs->output,
 				   chip->regs->output + NBANK(chip));
-	if (ret != 0) {
+	if (ret) {
 		dev_err(dev, "Failed to sync GPIO out registers: %d\n", ret);
 		return ret;
 	}
@@ -1077,7 +1077,7 @@ static int pca953x_regcache_sync(struct device *dev)
 	if (chip->driver_data & PCA_PCAL) {
 		ret = regcache_sync_region(chip->regmap, PCAL953X_IN_LATCH,
 					   PCAL953X_IN_LATCH + NBANK(chip));
-		if (ret != 0) {
+		if (ret) {
 			dev_err(dev, "Failed to sync INT latch registers: %d\n",
 				ret);
 			return ret;
@@ -1085,7 +1085,7 @@ static int pca953x_regcache_sync(struct device *dev)
 
 		ret = regcache_sync_region(chip->regmap, PCAL953X_INT_MASK,
 					   PCAL953X_INT_MASK + NBANK(chip));
-		if (ret != 0) {
+		if (ret) {
 			dev_err(dev, "Failed to sync INT mask registers: %d\n",
 				ret);
 			return ret;
@@ -1117,7 +1117,7 @@ static int pca953x_resume(struct device *dev)
 
 	if (!atomic_read(&chip->wakeup_path)) {
 		ret = regulator_enable(chip->regulator);
-		if (ret != 0) {
+		if (ret) {
 			dev_err(dev, "Failed to enable regulator: %d\n", ret);
 			return 0;
 		}
@@ -1130,7 +1130,7 @@ static int pca953x_resume(struct device *dev)
 		return ret;
 
 	ret = regcache_sync(chip->regmap);
-	if (ret != 0) {
+	if (ret) {
 		dev_err(dev, "Failed to restore register map: %d\n", ret);
 		return ret;
 	}