> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +     struct pltfm_imx_data *imx_data =
> +                             (struct pltfm_imx_data *)pltfm_host->scratchpad;
> +

Uh, no. Sorry that was a misunderstanding of this:

===
Do you means keep the u32 scratchpad, and use one u32---> pointer exchange, 
right?
-       u32 scratchpad; /* to handle quirks across io-accessor calls */
+       void *priv; /* to handle quirks across io-accessor calls */
===

When you said "exchanging" 'scratchpad' with a 'void *', I thought you really
meant replacing it in the struct like the diff sketches. Casting a variable to
a struct * is not a good idea. The private structure itself looks okay.

> +     struct pltfm_imx_data *imx_data;
> +
> +     imx_data = kzalloc(sizeof(struct pltfm_imx_data), GFP_KERNEL);
> +     pltfm_host->scratchpad = (u32)imx_data;
>  
>       clk = clk_get(mmc_dev(host->mmc), NULL);
>       if (IS_ERR(clk)) {

Do that after clk_get, otherwise you leak memory if it clk_get fails.

Regards

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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