> Subject: [PATCH] mmc: zynq_sdhci: fix uninitialized pointer deref on probe
>
> Since commit 3d296365e4e8 ("mmc: sdhci: Add support for
> sdhci-caps-mask") sdhci_setup_cfg() expects a valid sdhci_host mmc field.
> Move the mmc field initialization before sdhci_setup_cfg() call to avoid crash
> on mmc pointer dereference.
>
> [this patch is based on commit 41a9fab8dac8 ("mmc: mv_sdhci: fix
> uninitialized pointer deref on probe") by Baruch Siach]
>
> Fixes: 3d296365e4e8 ("mmc: sdhci: Add support for sdhci-caps-mask")
> Cc: Faiz Abbas <faiz_ab...@ti.com>
> Cc: Baruch Siach <bar...@tkos.co.il>
> Signed-off-by: Matwey V. Kornilov <matwey.korni...@gmail.com>
> ---
> drivers/mmc/zynq_sdhci.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index
> c525084250..3225a7ac93 100644
> --- a/drivers/mmc/zynq_sdhci.c
> +++ b/drivers/mmc/zynq_sdhci.c
> @@ -242,13 +242,14 @@ static int arasan_sdhci_probe(struct udevice *dev)
>
> host->max_clk = clock;
>
> + host->mmc = &plat->mmc;
> + host->mmc->dev = dev;
> + host->mmc->priv = host;
> +
> ret = sdhci_setup_cfg(&plat->cfg, host, plat->f_max,
> CONFIG_ZYNQ_SDHCI_MIN_FREQ);
> - host->mmc = &plat->mmc;
> if (ret)
> return ret;
> - host->mmc->priv = host;
> - host->mmc->dev = dev;
> upriv->mmc = host->mmc;
>
> return sdhci_probe(dev);
Reviewed-by: Peng Fan <peng....@nxp.com>
> --
> 2.16.4
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