linux-kernel - [PATCH] mips: pci-lantiq: Fix check for valid gpio

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Message-Id: <1340011706-32281-1-git-send-email-stigge@antcom.de>
Date:	Mon, 18 Jun 2012 11:28:26 +0200
From:	Roland Stigge <stigge@...com.de>
To:	ralf@...ux-mips.org, blogic@...nwrt.org, jkosina@...e.cz,
	standby24x7@...il.com, bhelgaas@...gle.com,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	grant.likely@...retlab.ca, linus.walleij@...ricsson.com
Cc:	Roland Stigge <stigge@...com.de>
Subject: [PATCH] mips: pci-lantiq: Fix check for valid gpio

This patch fixes two checks for valid gpio number, formerly (wrongly)
considering zero as invalid, now using gpio_is_valid().

Signed-off-by: Roland Stigge <stigge@...com.de>
---
 arch/mips/pci/pci-lantiq.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-2.6.orig/arch/mips/pci/pci-lantiq.c
+++ linux-2.6/arch/mips/pci/pci-lantiq.c
@@ -129,7 +129,7 @@ static int __devinit ltq_pci_startup(str
 
 	/* setup reset gpio used by pci */
 	reset_gpio = of_get_named_gpio(node, "gpio-reset", 0);
-	if (reset_gpio > 0)
+	if (gpio_is_valid(reset_gpio))
 		devm_gpio_request(&pdev->dev, reset_gpio, "pci-reset");
 
 	/* enable auto-switching between PCI and EBU */
@@ -192,7 +192,7 @@ static int __devinit ltq_pci_startup(str
 	ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_IEN) | 0x10, LTQ_EBU_PCC_IEN);
 
 	/* toggle reset pin */
-	if (reset_gpio > 0) {
+	if (gpio_is_valid(reset_gpio)) {
 		__gpio_set_value(reset_gpio, 0);
 		wmb();
 		mdelay(1);
--
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