linux-kernel - [PATCH v3 3/3] x86/platform/intel-mid: Don't shadow error code of mp_map_gsi_to

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Date:   Wed, 18 Jan 2017 19:42:55 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
        x86@...nel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v3 3/3] x86/platform/intel-mid: Don't shadow error code of mp_map_gsi_to_irq()

When call mp_map_gsi_to_irq() and return its error code do not shadow it.
Note that 0 is not an error.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c b/arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c
index 3f1f1c77d090..8a10a56f2840 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_mrfld_wdt.c
@@ -28,9 +28,9 @@ static struct platform_device wdt_dev = {
 
 static int tangier_probe(struct platform_device *pdev)
 {
-	int gsi;
 	struct irq_alloc_info info;
 	struct intel_mid_wdt_pdata *pdata = pdev->dev.platform_data;
+	int gsi, irq;
 
 	if (!pdata)
 		return -EINVAL;
@@ -38,10 +38,10 @@ static int tangier_probe(struct platform_device *pdev)
 	/* IOAPIC builds identity mapping between GSI and IRQ on MID */
 	gsi = pdata->irq;
 	ioapic_set_alloc_attr(&info, cpu_to_node(0), 1, 0);
-	if (mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info) <= 0) {
-		dev_warn(&pdev->dev, "cannot find interrupt %d in ioapic\n",
-			 gsi);
-		return -EINVAL;
+	irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
+	if (irq < 0) {
+		dev_warn(&pdev->dev, "cannot find interrupt %d in ioapic\n", gsi);
+		return irq;
 	}
 
 	return 0;
-- 
2.11.0