From: Christian Loehle CLoehle@hyperstone.com
commit 568898cbc8b570311b3b94a3202b8233f4168144 upstream.
SPI doesn't have the usual PROG path we can check for error bits after moving back to TRAN. Instead it holds the line LOW until completion. We can then check if the card shows any errors or is in IDLE state, indicating the line is no longer LOW because the card was reset.
Signed-off-by: Christian Loehle cloehle@hyperstone.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/55920f880c9742f486f64aa44e25508e@hyperstone.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mmc/core/block.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -178,6 +178,7 @@ static void mmc_blk_rw_rq_prep(struct mm int recovery_mode, struct mmc_queue *mq); static void mmc_blk_hsq_req_done(struct mmc_request *mrq); +static int mmc_spi_err_check(struct mmc_card *card);
static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk) { @@ -608,6 +609,11 @@ static int __mmc_blk_ioctl_cmd(struct mm if ((card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) return 0;
+ if (mmc_host_is_spi(card->host)) { + if (idata->ic.write_flag || r1b_resp || cmd.flags & MMC_RSP_SPI_BUSY) + return mmc_spi_err_check(card); + return err; + } /* Ensure RPMB/R1B command has completed by polling with CMD13. */ if (idata->rpmb || r1b_resp) err = mmc_poll_for_busy(card, busy_timeout_ms, false,