[PATCH] pcmcia: Use platform_get_irq() to get the interrupt

[cgel.zte at gmail.com]

From: Minghao Chi <chi.minghao at zte.com.cn>

It is not recommened to use platform_get_resource(pdev, IORESOURCE_IRQ)
for requesting IRQ's resources any more, as they can be not ready yet in
case of DT-booting.

platform_get_irq() instead is a recommended way for getting IRQ even if
it was not retrieved earlier.

It also makes code simpler because we're getting "int" value right away
and no conversion from resource to int is required.

Reported-by: Zeal Robot <zealci at zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao at zte.com.cn>
---
 drivers/pcmcia/bcm63xx_pcmcia.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/pcmcia/bcm63xx_pcmcia.c b/drivers/pcmcia/bcm63xx_pcmcia.c
index 16f573173471..bb06311d0b5f 100644
--- a/drivers/pcmcia/bcm63xx_pcmcia.c
+++ b/drivers/pcmcia/bcm63xx_pcmcia.c
@@ -327,10 +327,11 @@ static int bcm63xx_drv_pcmcia_probe(struct platform_device *pdev)
 {
 	struct bcm63xx_pcmcia_socket *skt;
 	struct pcmcia_socket *sock;
-	struct resource *res, *irq_res;
+	struct resource *res;
 	unsigned int regmem_size = 0, iomem_size = 0;
 	u32 val;
 	int ret;
+	int irq;
 
 	skt = kzalloc(sizeof(*skt), GFP_KERNEL);
 	if (!skt)
@@ -342,9 +343,9 @@ static int bcm63xx_drv_pcmcia_probe(struct platform_device *pdev)
 	/* make sure we have all resources we need */
 	skt->common_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	skt->attr_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
-	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	irq = platform_get_irq(pdev, 0);
 	skt->pd = pdev->dev.platform_data;
-	if (!skt->common_res || !skt->attr_res || !irq_res || !skt->pd) {
+	if (!skt->common_res || !skt->attr_res || (irq < 0) || !skt->pd) {
 		ret = -EINVAL;
 		goto err;
 	}
@@ -380,7 +381,7 @@ static int bcm63xx_drv_pcmcia_probe(struct platform_device *pdev)
 	sock->dev.parent = &pdev->dev;
 	sock->features = SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
 	sock->io_offset = (unsigned long)skt->io_base;
-	sock->pci_irq = irq_res->start;
+	sock->pci_irq = irq;
 
 #ifdef CONFIG_CARDBUS
 	sock->cb_dev = bcm63xx_cb_dev;
-- 
2.25.1