From ba33d8ac0c93fdfbdbc825ef690caab5d57e22c2 Mon Sep 17 00:00:00 2001 From: Andrew Bresticker Date: Wed, 8 Apr 2015 10:03:15 -0700 Subject: [PATCH] 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 Signed-off-by: Mark Brown --- drivers/spi/spi-img-spfi.c | 13 +++++++++++-- 1 file 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"); -- 2.34.1