[ARM] 3012/1: Corgi/Spitz LCD: Use bus_find_device to locate pxafb - fix compile error

Patch from Richard Purdie

Update corgi_lcd to use bus_find_device to locate the pxafb device
hence fixing a compile error.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 19 insertions, 1 deletions

diff --git a/arch/arm/mach-pxa/corgi_lcd.c b/arch/arm/mach-pxa/corgi_lcd.c
index c02ef7c0f7ef..850538fadece 100644
--- a/arch/arm/mach-pxa/corgi_lcd.c
+++ b/arch/arm/mach-pxa/corgi_lcd.c
@@ -467,6 +467,7 @@ void corgi_put_hsync(void)
 {
         if (get_hsync_time)
                 symbol_put(w100fb_get_hsynclen);
+        get_hsync_time = NULL;
 }
 
 void corgi_wait_hsync(void)
@@ -476,20 +477,37 @@ void corgi_wait_hsync(void)
 #endif
 
 #ifdef CONFIG_PXA_SHARP_Cxx00
+static struct device *spitz_pxafb_dev;
+
+static int is_pxafb_device(struct device * dev, void * data)
+{
+        struct platform_device *pdev = container_of(dev, struct platform_device, dev);
+
+        return (strncmp(pdev->name, "pxa2xx-fb", 9) == 0);
+}
+
 unsigned long spitz_get_hsync_len(void)
 {
+        if (!spitz_pxafb_dev) {
+                spitz_pxafb_dev = bus_find_device(&platform_bus_type, NULL, NULL, is_pxafb_device);
+                if (!spitz_pxafb_dev)
+                        return 0;
+        }
         if (!get_hsync_time)
                 get_hsync_time = symbol_get(pxafb_get_hsync_time);
         if (!get_hsync_time)
                 return 0;
 
-        return pxafb_get_hsync_time(&pxafb_device.dev);
+        return pxafb_get_hsync_time(spitz_pxafb_dev);
 }
 
 void spitz_put_hsync(void)
 {
+        put_device(spitz_pxafb_dev);
         if (get_hsync_time)
                 symbol_put(pxafb_get_hsync_time);
+        spitz_pxafb_dev = NULL;
+        get_hsync_time = NULL;
 }
 
 void spitz_wait_hsync(void)