diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/mmci.c | 8 | ||||
| -rw-r--r-- | drivers/mmc/host/mmci.h | 3 |
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 66aa59f54cd9..760759919f7f 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1123,8 +1123,12 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data, * can be as much as a FIFO-worth of data ahead. This * matters for FIFO overruns only. */ - remain = readl(host->base + MMCIDATACNT); - success = data->blksz * data->blocks - remain; + if (!host->variant->datacnt_useless) { + remain = readl(host->base + MMCIDATACNT); + success = data->blksz * data->blocks - remain; + } else { + success = 0; + } dev_dbg(mmc_dev(host->mmc), "MCI ERROR IRQ, status 0x%08x at 0x%08x\n", status_err, success); diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index eef7dd5be01d..cdcadd29a10d 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -224,6 +224,8 @@ struct mmci_host; * @datactrl_blksz: block size in power of two * @datactrl_dpsm_enable: enable value for DPSM * @datactrl_first: true if data must be setup before send command + * @datacnt_useless: true if you could not use datacnt register to read + * remaining data * @pwrreg_powerup: power up value for MMCIPOWER register * @f_max: maximum clk frequency supported by the controller. * @signal_direction: input/out direction of bus signals can be indicated @@ -264,6 +266,7 @@ struct variant_data { unsigned int datactrl_blocksz; unsigned int datactrl_dpsm_enable; u8 datactrl_first:1; + u8 datacnt_useless:1; u8 st_sdio:1; u8 st_clkdiv:1; u8 blksz_datactrl16:1; |
