FAILED: patch "[PATCH] usb: typec: Fix unchecked return value" failed to apply to 4.14-stable tree

The patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From e82adc1074a7356f1158233551df9e86b7ebfb82 Mon Sep 17 00:00:00 2001
From: "Gustavo A. R. Silva" <[email protected]>
Date: Mon, 18 Mar 2019 16:18:30 -0500
Subject: [PATCH] usb: typec: Fix unchecked return value

Currently there is no check on platform_get_irq() return value in case it fails, hence never actually reporting any errors and causing unexpected behavior when using such value as argument for function regmap_irq_get_virq().

Fix this by adding a proper check, a message error and return *irq* in case platform_get_irq() fails.

Addresses-Coverity-ID: 1443899 ("Improper use of negative value")

index 423208e19383..6770afd40765 100644
@@ -615,8 +615,13 @@ static int wcove_typec_probe(struct platform_device *pdev)
 	wcove->dev = &pdev->dev;
 	wcove->regmap = pmic->regmap;
 
-	irq = regmap_irq_get_virq(pmic->irq_chip_data_chgr,
-				  platform_get_irq(pdev, 0));
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq);
+		return irq;
+	}
+
+	irq = regmap_irq_get_virq(pmic->irq_chip_data_chgr, irq);
 	if (irq < 0)
 		return irq;