[PATCH] arm: stm32mp: stm32prog: check result of find_mmc_device
Patrice CHOTARD
patrice.chotard at st.com
Tue Jul 28 15:29:44 CEST 2020
On 7/6/20 1:20 PM, Patrick Delaunay wrote:
> Check result of find_mmc_device() before calling mmc_init().
>
> This patch avoid a data abort when the command try to acces
> to sd/mmc device deactivated in device tree.
>
> Fixes: aff4c5dd8265 ("stm32mp: stm32prog: add MMC device")
> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> ---
>
> arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
> index c5b8841b23..e4199dbaa5 100644
> --- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
> +++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
> @@ -560,7 +560,7 @@ static int init_device(struct stm32prog_data *data,
> #ifdef CONFIG_MMC
> case STM32PROG_MMC:
> mmc = find_mmc_device(dev->dev_id);
> - if (mmc_init(mmc)) {
> + if (!mmc || mmc_init(mmc)) {
> stm32prog_err("mmc device %d not found", dev->dev_id);
> return -ENODEV;
> }
Reviewed-by: Patrice Chotard <patrice.chotard at st.com>
Thanks
Patrice
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