Merge remote-tracking branch 'spi/topic/rspi' into spi-pdata

Conflicts:
	drivers/spi/spi-rspi.c

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 0bf1b2c457a1..08ea84a6eb32 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -232,6 +232,21 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi,
         return 0;
 }
 
+static int xilinx_spi_setup(struct spi_device *spi)
+{
+        /* always return 0, we can not check the number of bits.
+         * There are cases when SPI setup is called before any driver is
+         * there, in that case the SPI core defaults to 8 bits, which we
+         * do not support in some cases. But if we return an error, the
+         * SPI device would not be registered and no driver can get hold of it
+         * When the driver is there, it will call SPI setup again with the
+         * correct number of bits per transfer.
+         * If a driver setups with the wrong bit number, it will fail when
+         * it tries to do a transfer
+         */
+        return 0;
+}
+
 static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi)
 {
         u8 sr;
@@ -376,6 +391,7 @@ static int xilinx_spi_probe(struct platform_device *pdev)
         xspi->bitbang.chipselect = xilinx_spi_chipselect;
         xspi->bitbang.setup_transfer = xilinx_spi_setup_transfer;
         xspi->bitbang.txrx_bufs = xilinx_spi_txrx_bufs;
+        xspi->bitbang.master->setup = xilinx_spi_setup;
         init_completion(&xspi->done);
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);