[PATCH V2] mtd: fsl-quadspi: Access multiple chips simultaneously

[Fabio Estevam]

On Tue, May 12, 2015 at 7:27 PM, Han Xu <b45815 at freescale.com> wrote:
> Add supports for simultaneous access to multiple chips. Need to lock
> the mutex before any quad spi operations and unlock the mutex after
> operations complete.
>
> Rebase to latest l2-mtd code and resend.

It seems this would be better below the --- line.

>  static inline int is_vybrid_qspi(struct fsl_qspi *q)
> @@ -761,6 +763,7 @@ static int fsl_qspi_prep(struct spi_nor *nor, enum spi_nor_ops ops)
>         struct fsl_qspi *q = nor->priv;
>         int ret;
>
> +       mutex_lock(&q->lock);
>         ret = clk_enable(q->clk_en);
>         if (ret)
>                 return ret;

You forgot to unlock the mutex on error.