Subject: [PATCH] pxa168fb: Add .remove function

From: [email-masked] (Marek Vasut)
Date: Mon, 30 Aug 2010 19:43:47 +0200

Dne Po 30. srpna 2010 02:32:16 Haojian Zhuang napsal(a):
> The pxa168fb driver is missing .remove function so the framebuffer isn't
> correctly shut down when the module is removed.
> 
> Signed-off-by: Marek Vasut <[email-masked]>
> Signed-off-by: Haojian Zhuang <[email-masked]>
> ---
>  drivers/video/pxa168fb.c |   47
> ++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 47
> insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/video/pxa168fb.c b/drivers/video/pxa168fb.c
> index c91a7f7..ec2ddb2 100644
> --- a/drivers/video/pxa168fb.c
> +++ b/drivers/video/pxa168fb.c
> @@ -784,12 +784,53 @@ failed:
>  	return ret;
>  }
> 
> +static int __devexit pxa168fb_remove(struct platform_device *pdev)
> +{
> +	struct pxa168fb_info *fbi = platform_get_drvdata(pdev);
> +	struct fb_info *info;
> +	int irq;
> +	unsigned int data;
> +
> +	if (!fbi)
> +		return 0;
> +
> +	/* disable DMA transfer */
> +	data = readl(fbi->reg_base + LCD_SPU_DMA_CTRL0);
> +	data &= ~CFG_GRA_ENA_MASK;
> +	writel(data, fbi->reg_base + LCD_SPU_DMA_CTRL0);
> +
> +	info = fbi->info;
> +
> +	unregister_framebuffer(info);
> +

Haojian, is this line below correct?

If so, for this modified version, find my:

Acked-by: Marek Vasut <[email-masked]>

> +	writel(GRA_FRAME_IRQ0_ENA(0x0), fbi->reg_base + SPU_IRQ_ENA);
> +
> +	if (info->cmap.len)
> +		fb_dealloc_cmap(&info->cmap);
> +
> +	irq = platform_get_irq(pdev, 0);
> +	free_irq(irq, fbi);
> +
> +	dma_free_writecombine(fbi->dev, PAGE_ALIGN(info->fix.smem_len),
> +				info->screen_base, info->fix.smem_start);
> +
> +	iounmap(fbi->reg_base);
> +
> +	clk_disable(fbi->clk);
> +	clk_put(fbi->clk);
> +
> +	framebuffer_release(info);
> +
> +	return 0;
> +}
> +
>  static struct platform_driver pxa168fb_driver = {
>  	.driver		= {
>  		.name	= "pxa168-fb",
>  		.owner	= THIS_MODULE,
>  	},
>  	.probe		= pxa168fb_probe,
> +	.remove		= __devexit_p(pxa168fb_remove),
>  };
> 
>  static int __devinit pxa168fb_init(void)
> @@ -798,6 +839,12 @@ static int __devinit pxa168fb_init(void)
>  }
>  module_init(pxa168fb_init);
> 
> +static void __exit pxa168fb_exit(void)
> +{
> +	platform_driver_unregister(&pxa168fb_driver);
> +}
> +module_exit(pxa168fb_exit);
> +
>  MODULE_AUTHOR("Lennert Buytenhek <[email-masked]> "
>  	      "Green Wan <[email-masked]>");
>  MODULE_DESCRIPTION("Framebuffer driver for PXA168/910");