linux-kernel - [PATCH v1 1/1] driver core: platform: Make clear error code used for missed IRQ

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Message-Id: <20210331145937.35980-1-andriy.shevchenko@linux.intel.com>
Date:   Wed, 31 Mar 2021 17:59:36 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Uwe Kleine-König <uwe@...ine-koenig.org>,
        linux-kernel@...r.kernel.org
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] driver core: platform: Make clear error code used for missed IRQ

We have few code paths where same error code is assigned and
returned for missed IRQ. Unify that under single error path.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/base/platform.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index d82db3eabcd4..1e61fac64435 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -174,7 +174,7 @@ static int platform_do_get_irq(struct platform_device *dev, unsigned int num)
 #ifdef CONFIG_SPARC
 	/* sparc does not have irqs represented as IORESOURCE_IRQ resources */
 	if (!dev || num >= dev->archdata.num_irqs)
-		return -ENXIO;
+		goto out_not_found;
 	ret = dev->archdata.irqs[num];
 	goto out;
 #else
@@ -205,10 +205,8 @@ static int platform_do_get_irq(struct platform_device *dev, unsigned int num)
 		struct irq_data *irqd;
 
 		irqd = irq_get_irq_data(r->start);
-		if (!irqd) {
-			ret = -ENXIO;
-			goto out;
-		}
+		if (!irqd)
+			goto out_not_found;
 		irqd_set_trigger_type(irqd, r->flags & IORESOURCE_BITS);
 	}
 
@@ -231,8 +229,9 @@ static int platform_do_get_irq(struct platform_device *dev, unsigned int num)
 			goto out;
 	}
 
-	ret = -ENXIO;
 #endif
+out_not_found:
+	ret = -ENXIO;
 out:
 	WARN(ret == 0, "0 is an invalid IRQ number\n");
 	return ret;
-- 
2.30.2