[PATCH V2 17/54] mmc: sdhci: Clear pointers when a request finishes

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Several pointers are used to identify when interrupts are expected. Namely,
host->cmd, host->data_cmd and host->data. Ensure those are cleared when
a request finishes. That tidies the case when a request is errored out
before normal processing has completed, ensuring any interrupts that occur
subsequently are not acted upon.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
 drivers/mmc/host/sdhci.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 320c294b9d73..dce31b798180 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -935,6 +935,15 @@ static bool sdhci_needs_reset(struct sdhci_host *host, struct mmc_request *mrq)
 
 static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
 {
+	if (host->cmd && host->cmd->mrq == mrq)
+		host->cmd = NULL;
+
+	if (host->data_cmd && host->data_cmd->mrq == mrq)
+		host->data_cmd = NULL;
+
+	if (host->data && host->data->mrq == mrq)
+		host->data = NULL;
+
 	if (sdhci_needs_reset(host, mrq))
 		host->pending_reset = true;
 
@@ -2240,9 +2249,6 @@ static void sdhci_tasklet_finish(unsigned long param)
 	}
 
 	host->mrq = NULL;
-	host->cmd = NULL;
-	host->data = NULL;
-	host->data_cmd = NULL;
 
 	sdhci_led_deactivate(host);
 
-- 
1.9.1

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