On Tue, Jun 21, 2022 at 12:15:29PM +0200, Robin van der Gracht wrote:
> A DMA cmd + data transfer can finish or stop (i.e. on a block gap) before
> the status register is cleared. In that case we'll lose track of state
> causing sdhci_transfer_data_dma() to loop forever waiting for status bits
> that are already cleared.
>
> Clearing SDHCI_INT_CMD_COMPLETE should suffice here. Since it's not
> evaluated a second time, clearing it at the start of the function is
> sufficient so we can just remove the erroneous status write.
>
> Signed-off-by: Robin van der Gracht
> ---
> drivers/mci/imx-esdhc-common.c | 1 -
> 1 file changed, 1 deletion(-)
Applied to master, thanks
Sascha
>
> diff --git a/drivers/mci/imx-esdhc-common.c b/drivers/mci/imx-esdhc-common.c
> index a12db43c88..27293e44b7 100644
> --- a/drivers/mci/imx-esdhc-common.c
> +++ b/drivers/mci/imx-esdhc-common.c
> @@ -176,7 +176,6 @@ int __esdhc_send_cmd(struct fsl_esdhc_host *host, struct
> mci_cmd *cmd,
> }
>
> irqstat = sdhci_read32(&host->sdhci, SDHCI_INT_STATUS);
> - sdhci_write32(&host->sdhci, SDHCI_INT_STATUS, irqstat);
>
> if (irqstat & CMD_ERR)
> return -EIO;
> --
> 2.34.1
>
>
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