pcmcia at91_cf: fix raw gpio number usage

This patches fixes two things:
* Use gpio_valid function to check gpio before usage
  This must be done after 63b4c29678500 which uses -EINVAL for unused pin's
* Use gpio_to_irq to convert gpio's to irq
  The driver assumed a 1:1 mapping between gpio and irq numbers. This is no
  longer true after d0fbda9add3281.

Tested on custom RM9200 board with 8gb CF card.

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 26 insertions, 26 deletions

diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 4902206f53d9..4127441015db 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -16,13 +16,13 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
+#include <linux/gpio.h>
 
 #include <pcmcia/ss.h>
 
 #include <mach/hardware.h>
 #include <asm/io.h>
 #include <asm/sizes.h>
-#include <asm/gpio.h>
 
 #include <mach/board.h>
 #include <mach/at91rm9200_mc.h>
@@ -69,7 +69,7 @@ static irqreturn_t at91_cf_irq(int irq, void *_cf)
 {
         struct at91_cf_socket *cf = _cf;
 
-        if (irq == cf->board->det_pin) {
+        if (irq == gpio_to_irq(cf->board->det_pin)) {
                 unsigned present = at91_cf_present(cf);
 
                 /* kick pccard as needed */
@@ -95,8 +95,8 @@ static int at91_cf_get_status(struct pcmcia_socket *s, u_int *sp)
 
         /* NOTE: CF is always 3VCARD */
         if (at91_cf_present(cf)) {
-                int rdy = cf->board->irq_pin;   /* RDY/nIRQ */
-                int vcc = cf->board->vcc_pin;
+                int rdy = gpio_is_valid(cf->board->irq_pin);    /* RDY/nIRQ */
+                int vcc = gpio_is_valid(cf->board->vcc_pin);
 
                 *sp = SS_DETECT | SS_3VCARD;
                 if (!rdy || gpio_get_value(rdy))
@@ -117,7 +117,7 @@ at91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s)
         cf = container_of(sock, struct at91_cf_socket, socket);
 
         /* switch Vcc if needed and possible */
-        if (cf->board->vcc_pin) {
+        if (gpio_is_valid(cf->board->vcc_pin)) {
                 switch (s->Vcc) {
                         case 0:
                                 gpio_set_value(cf->board->vcc_pin, 0);
@@ -221,7 +221,7 @@ static int __init at91_cf_probe(struct platform_device *pdev)
         struct resource         *io;
         int                     status;
 
-        if (!board || !board->det_pin || !board->rst_pin)
+        if (!board || !gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin))
                 return -ENODEV;
 
         io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -241,7 +241,7 @@ static int __init at91_cf_probe(struct platform_device *pdev)
         status = gpio_request(board->det_pin, "cf_det");
         if (status < 0)
                 goto fail0;
-        status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf);
+        status = request_irq(gpio_to_irq(board->det_pin), at91_cf_irq, 0, driver_name, cf);
         if (status < 0)
                 goto fail00;
         device_init_wakeup(&pdev->dev, 1);
@@ -250,7 +250,7 @@ static int __init at91_cf_probe(struct platform_device *pdev)
         if (status < 0)
                 goto fail0a;
 
-        if (board->vcc_pin) {
+        if (gpio_is_valid(board->vcc_pin)) {
                 status = gpio_request(board->vcc_pin, "cf_vcc");
                 if (status < 0)
                         goto fail0b;
@@ -262,15 +262,15 @@ static int __init at91_cf_probe(struct platform_device *pdev)
          * unless we report that we handle everything (sigh).
          * (Note:  DK board doesn't wire the IRQ pin...)
          */
-        if (board->irq_pin) {
+        if (gpio_is_valid(board->irq_pin)) {
                 status = gpio_request(board->irq_pin, "cf_irq");
                 if (status < 0)
                         goto fail0c;
-                status = request_irq(board->irq_pin, at91_cf_irq,
+                status = request_irq(gpio_to_irq(board->irq_pin), at91_cf_irq,
                                 IRQF_SHARED, driver_name, cf);
                 if (status < 0)
                         goto fail0d;
-                cf->socket.pci_irq = board->irq_pin;
+                cf->socket.pci_irq = gpio_to_irq(board->irq_pin);
         } else
                 cf->socket.pci_irq = nr_irqs + 1;
 
@@ -289,7 +289,7 @@ static int __init at91_cf_probe(struct platform_device *pdev)
         }
 
         pr_info("%s: irqs det #%d, io #%d\n", driver_name,
-                board->det_pin, board->irq_pin);
+                gpio_to_irq(board->det_pin), gpio_to_irq(board->irq_pin));
 
         cf->socket.owner = THIS_MODULE;
         cf->socket.dev.parent = &pdev->dev;
@@ -311,19 +311,19 @@ fail2:
 fail1:
         if (cf->socket.io_offset)
                 iounmap((void __iomem *) cf->socket.io_offset);
-        if (board->irq_pin) {
-                free_irq(board->irq_pin, cf);
+        if (gpio_is_valid(board->irq_pin)) {
+                free_irq(gpio_to_irq(board->irq_pin), cf);
 fail0d:
                 gpio_free(board->irq_pin);
         }
 fail0c:
-        if (board->vcc_pin)
+        if (gpio_is_valid(board->vcc_pin))
                 gpio_free(board->vcc_pin);
 fail0b:
         gpio_free(board->rst_pin);
 fail0a:
         device_init_wakeup(&pdev->dev, 0);
-        free_irq(board->det_pin, cf);
+        free_irq(gpio_to_irq(board->det_pin), cf);
 fail00:
         gpio_free(board->det_pin);
 fail0:
@@ -340,15 +340,15 @@ static int __exit at91_cf_remove(struct platform_device *pdev)
         pcmcia_unregister_socket(&cf->socket);
         release_mem_region(io->start, resource_size(io));
         iounmap((void __iomem *) cf->socket.io_offset);
-        if (board->irq_pin) {
-                free_irq(board->irq_pin, cf);
+        if (gpio_is_valid(board->irq_pin)) {
+                free_irq(gpio_to_irq(board->irq_pin), cf);
                 gpio_free(board->irq_pin);
         }
-        if (board->vcc_pin)
+        if (gpio_is_valid(board->vcc_pin))
                 gpio_free(board->vcc_pin);
         gpio_free(board->rst_pin);
         device_init_wakeup(&pdev->dev, 0);
-        free_irq(board->det_pin, cf);
+        free_irq(gpio_to_irq(board->det_pin), cf);
         gpio_free(board->det_pin);
         kfree(cf);
         return 0;
@@ -362,9 +362,9 @@ static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
         struct at91_cf_data     *board = cf->board;
 
         if (device_may_wakeup(&pdev->dev)) {
-                enable_irq_wake(board->det_pin);
-                if (board->irq_pin)
-                        enable_irq_wake(board->irq_pin);
+                enable_irq_wake(gpio_to_irq(board->det_pin));
+                if (gpio_is_valid(board->irq_pin))
+                        enable_irq_wake(gpio_to_irq(board->irq_pin));
         }
         return 0;
 }
@@ -375,9 +375,9 @@ static int at91_cf_resume(struct platform_device *pdev)
         struct at91_cf_data     *board = cf->board;
 
         if (device_may_wakeup(&pdev->dev)) {
-                disable_irq_wake(board->det_pin);
-                if (board->irq_pin)
-                        disable_irq_wake(board->irq_pin);
+                disable_irq_wake(gpio_to_irq(board->det_pin));
+                if (gpio_is_valid(board->irq_pin))
+                        disable_irq_wake(gpio_to_irq(board->irq_pin));
         }
 
         return 0;