spi: img-spfi: Reset controller after each message

Imagination has recommended that the SPFI controller be reset after
each message, regardless of success or failure.  Do this in an
unprepare_message() callback.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
index 3fd7b07c3eef..c37f6e50096e 100644
--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -414,8 +414,6 @@ static void img_spfi_handle_err(struct spi_master *master,
                 dmaengine_terminate_all(spfi->rx_ch);
         }
         spin_unlock_irqrestore(&spfi->lock, flags);
-
-        spfi_reset(spfi);
 }
 
 static int img_spfi_prepare(struct spi_master *master, struct spi_message *msg)
@@ -437,6 +435,16 @@ static int img_spfi_prepare(struct spi_master *master, struct spi_message *msg)
         return 0;
 }
 
+static int img_spfi_unprepare(struct spi_master *master,
+                              struct spi_message *msg)
+{
+        struct img_spfi *spfi = spi_master_get_devdata(master);
+
+        spfi_reset(spfi);
+
+        return 0;
+}
+
 static void img_spfi_config(struct spi_master *master, struct spi_device *spi,
                             struct spi_transfer *xfer)
 {
@@ -610,6 +618,7 @@ static int img_spfi_probe(struct platform_device *pdev)
         master->set_cs = img_spfi_set_cs;
         master->transfer_one = img_spfi_transfer_one;
         master->prepare_message = img_spfi_prepare;
+        master->unprepare_message = img_spfi_unprepare;
         master->handle_err = img_spfi_handle_err;
 
         spfi->tx_ch = dma_request_slave_channel(spfi->dev, "tx");