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From:   Christophe Leroy <christophe.leroy@csgroup.eu>
To:     Alan Stern <stern@rowland.harvard.edu>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Christophe Leroy <christophe.leroy@csgroup.eu>,
        linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: [PATCH] usb: Replace NO_IRQ by 0
Date:   Thu,  6 Oct 2022 07:15:44 +0200
Message-Id: <63f6d2e7ea17f6522f36abd6cf5e6a7f25f215c6.1665033267.git.christophe.leroy@csgroup.eu>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

NO_IRQ is used to check the return of irq_of_parse_and_map().

On some architecture NO_IRQ is 0, on other architectures it is -1.

irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.

So use 0 instead of using NO_IRQ.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
 drivers/usb/host/ehci-grlib.c  | 2 +-
 drivers/usb/host/ehci-ppc-of.c | 2 +-
 drivers/usb/host/fhci-hcd.c    | 2 +-
 drivers/usb/host/ohci-ppc-of.c | 2 +-
 drivers/usb/host/uhci-grlib.c  | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/host/ehci-grlib.c b/drivers/usb/host/ehci-grlib.c
index a2c3b4ec8a8b..0717f2ccf49d 100644
--- a/drivers/usb/host/ehci-grlib.c
+++ b/drivers/usb/host/ehci-grlib.c
@@ -99,7 +99,7 @@ static int ehci_hcd_grlib_probe(struct platform_device *op)
 	hcd->rsrc_len = resource_size(&res);
 
 	irq = irq_of_parse_and_map(dn, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",
 			__FILE__);
 		rv = -EBUSY;
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index 28a19693c19f..62a0a193798c 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -119,7 +119,7 @@ static int ehci_hcd_ppc_of_probe(struct platform_device *op)
 	hcd->rsrc_len = resource_size(&res);
 
 	irq = irq_of_parse_and_map(dn, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",
 			__FILE__);
 		rv = -EBUSY;
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index 2ba09c3fbc2f..6d3215a3ef81 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -693,7 +693,7 @@ static int of_fhci_probe(struct platform_device *ofdev)
 
 	/* USB Host interrupt. */
 	usb_irq = irq_of_parse_and_map(node, 0);
-	if (usb_irq == NO_IRQ) {
+	if (!usb_irq) {
 		dev_err(dev, "could not get usb irq\n");
 		ret = -EINVAL;
 		goto err_usb_irq;
diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 591f675cc930..f2f6c832ec98 100644
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -120,7 +120,7 @@ static int ohci_hcd_ppc_of_probe(struct platform_device *op)
 	}
 
 	irq = irq_of_parse_and_map(dn, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",
 			__FILE__);
 		rv = -EBUSY;
diff --git a/drivers/usb/host/uhci-grlib.c b/drivers/usb/host/uhci-grlib.c
index 3ef6d52839e5..907d5f01edfd 100644
--- a/drivers/usb/host/uhci-grlib.c
+++ b/drivers/usb/host/uhci-grlib.c
@@ -116,7 +116,7 @@ static int uhci_hcd_grlib_probe(struct platform_device *op)
 	hcd->rsrc_len = resource_size(&res);
 
 	irq = irq_of_parse_and_map(dn, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_usb;
-- 
2.37.1