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 <robin@xxxxxxxxxxx> > --- > 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 > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
