[RFC PATCH v3 1/2] mmc: tmio: add generic hook to fixup after a completed request

[Wolfram Sang <wsa+renesas@sang-engineering.com>]

Sadly, due to HW bugs, we need a callback to work around issues just
before completing the request.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/mmc/host/tmio_mmc.h      | 1 +
 drivers/mmc/host/tmio_mmc_core.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index b4cf10109162..766a6116a9d1 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -177,6 +177,7 @@ struct tmio_mmc_host {
 	void (*reset)(struct tmio_mmc_host *host);
 	void (*hw_reset)(struct tmio_mmc_host *host);
 	bool (*check_retune)(struct tmio_mmc_host *host);
+	void (*fixup_request)(struct tmio_mmc_host *host, struct mmc_request *mrq);
 
 	/*
 	 * Mandatory callback for tuning to occur which is optional for SDR50
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index d7fde57c78c1..1672c849f78a 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -827,6 +827,9 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host)
 		return;
 	}
 
+	if (host->fixup_request)
+		host->fixup_request(host, mrq);
+
 	mmc_request_done(host->mmc, mrq);
 }
 
-- 
2.20.1