In order to support commands during data transfer, there will have to be up
to two active requests (mrqs) at a time, instead of just one. That means
ensuring that all requests get errored out in the cases of card or driver
removal.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 31 +++++++++++++++++++++++--------
1 file changed, 23 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 4361c3829106..e124dc632cac 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2131,6 +2131,24 @@ static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
sdhci_pre_dma_transfer(host, mrq->data, COOKIE_PRE_MAPPED);
}
+static inline bool sdhci_has_requests(struct sdhci_host *host)
+{
+ return host->cmd || host->data_cmd;
+}
+
+static void sdhci_error_out_mrqs(struct sdhci_host *host, int err)
+{
+ if (host->data_cmd) {
+ host->data_cmd->error = err;
+ sdhci_finish_mrq(host, host->data_cmd->mrq);
+ }
+
+ if (host->cmd) {
+ host->cmd->error = err;
+ sdhci_finish_mrq(host, host->cmd->mrq);
+ }
+}
+
static void sdhci_card_event(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
@@ -2145,8 +2163,8 @@ static void sdhci_card_event(struct mmc_host *mmc)
spin_lock_irqsave(&host->lock, flags);
- /* Check host->mrq first in case we are runtime suspended */
- if (host->mrq && !present) {
+ /* Check sdhci_has_requests() first in case we are runtime suspended */
+ if (sdhci_has_requests(host) && !present) {
pr_err("%s: Card removed during transfer!\n",
mmc_hostname(host->mmc));
pr_err("%s: Resetting controller.\n",
@@ -2155,8 +2173,7 @@ static void sdhci_card_event(struct mmc_host *mmc)
sdhci_do_reset(host, SDHCI_RESET_CMD);
sdhci_do_reset(host, SDHCI_RESET_DATA);
- host->mrq->cmd->error = -ENOMEDIUM;
- sdhci_finish_mrq(host, host->mrq);
+ sdhci_error_out_mrqs(host, -ENOMEDIUM);
}
spin_unlock_irqrestore(&host->lock, flags);
@@ -3425,12 +3442,10 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
host->flags |= SDHCI_DEVICE_DEAD;
- if (host->mrq) {
+ if (sdhci_has_requests(host)) {
pr_err("%s: Controller removed during "
" transfer!\n", mmc_hostname(mmc));
-
- host->mrq->cmd->error = -ENOMEDIUM;
- sdhci_finish_mrq(host, host->mrq);
+ sdhci_error_out_mrqs(host, -ENOMEDIUM);
}
spin_unlock_irqrestore(&host->lock, flags);
--
1.9.1
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