Re: [PATCH v4] gadget: fsl_mxc_udc: do not depend on grouped clocks

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On Wed, Jun 13, 2012 at 01:09:21PM -0300, Fabio Estevam wrote:
> With the new common clock infrastructure, the following clocks should be 
> used on i.MX drivers: ipg, per and ahb.
> 
> Adapt fsl_mxc_udc to follow this new behaviour to fix the following probe error:
> 
> Freescale High-Speed USB SOC Device Controller driver (Apr 20, 2007)
> fsl-usb2-udc fsl-usb2-udc: clk_get("usb") failed
> fsl-usb2-udc: probe of fsl-usb2-udc failed with error -2
> 
>  
> @@ -103,21 +96,15 @@ void fsl_udc_clk_finalize(struct platform_device *pdev)
>  	}
>  
>  	/* ULPI transceivers don't need usbpll */
> -	if (pdata->phy_mode == FSL_USB2_PHY_ULPI) {
> -		clk_disable(mxc_usb_clk);
> -		clk_put(mxc_usb_clk);
> -		mxc_usb_clk = NULL;
> -	}
> +	if (pdata->phy_mode == FSL_USB2_PHY_ULPI)
> +		clk_disable_unprepare(mxc_per_clk);
> +

When is finalize called? In FSL_USB2_PHY_ULPI mode this
clk_disable_unprepare seems to be unbalanced with the
clk_disable_unprepare calls below in release()

Sascha

>  }
>  
>  void fsl_udc_clk_release(void)
>  {
> -	if (mxc_usb_clk) {
> -		clk_disable(mxc_usb_clk);
> -		clk_put(mxc_usb_clk);
> -	}
> -	if (!cpu_is_mx35()) {
> -		clk_disable(mxc_ahb_clk);
> -		clk_put(mxc_ahb_clk);
> -	}
> +	clk_disable_unprepare(mxc_per_clk);
> +	clk_disable_unprepare(mxc_ahb_clk);
> +	clk_disable_unprepare(mxc_ipg_clk);
> +
>  }
> -- 
> 1.7.1
> 
> 
> 

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