[ARM] 5118/1: pxafb: add exit and remove handlers

This patch adds exit and remove handlers to pxafb so that it can be loaded
and unloaded as a module.

Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 44 insertions, 0 deletions

diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 3ee314beacc1..3682bbd7e50e 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -1777,11 +1777,49 @@ failed:
         return ret;
 }
 
+static int __devexit pxafb_remove(struct platform_device *dev)
+{
+        struct pxafb_info *fbi = platform_get_drvdata(dev);
+        struct resource *r;
+        int irq;
+        struct fb_info *info;
+
+        if (!fbi)
+                return 0;
+
+        info = &fbi->fb;
+
+        unregister_framebuffer(info);
+
+        pxafb_disable_controller(fbi);
+
+        if (fbi->fb.cmap.len)
+                fb_dealloc_cmap(&fbi->fb.cmap);
+
+        irq = platform_get_irq(dev, 0);
+        free_irq(irq, fbi);
+
+        dma_free_writecombine(&dev->dev, fbi->map_size,
+                                        fbi->map_cpu, fbi->map_dma);
+
+        iounmap(fbi->mmio_base);
+
+        r = platform_get_resource(dev, IORESOURCE_MEM, 0);
+        release_mem_region(r->start, r->end - r->start + 1);
+
+        clk_put(fbi->clk);
+        kfree(fbi);
+
+        return 0;
+}
+
 static struct platform_driver pxafb_driver = {
         .probe          = pxafb_probe,
+        .remove         = pxafb_remove,
         .suspend        = pxafb_suspend,
         .resume         = pxafb_resume,
         .driver         = {
+                .owner  = THIS_MODULE,
                 .name   = "pxa2xx-fb",
         },
 };
@@ -1794,7 +1832,13 @@ static int __devinit pxafb_init(void)
         return platform_driver_register(&pxafb_driver);
 }
 
+static void __exit pxafb_exit(void)
+{
+        platform_driver_unregister(&pxafb_driver);
+}
+
 module_init(pxafb_init);
+module_exit(pxafb_exit);
 
 MODULE_DESCRIPTION("loadable framebuffer driver for PXA");
 MODULE_LICENSE("GPL");