Commit c3092941 authored by Ricardo Ribalda Delgado's avatar Ricardo Ribalda Delgado Committed by Mark Brown
Browse files

spi/xilinx: Make spi_tx and spi_rx simmetric 



spi_rx handles the case where the buffer is null. Nevertheless spi_tx
did not handle it, and was handled by the caller function.

Signed-off-by: default avatarRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 24ba5e59

drivers/spi/spi-xilinx.c

+5 −4
Original line number Diff line number Diff line
@@ -116,6 +116,10 @@ static unsigned int xspi_read32_be(void __iomem *addr) 


static void xilinx_spi_tx(struct xilinx_spi *xspi)

{

	if (!xspi->tx_ptr) {

		xspi->write_fn(0, xspi->regs + XSPI_TXD_OFFSET);

		return;

	}

	xspi->write_fn(*(u32 *)(xspi->tx_ptr), xspi->regs + XSPI_TXD_OFFSET);

	xspi->tx_ptr += xspi->bits_per_word / 8;

}
@@ -230,10 +234,7 @@ static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi, int n_words) 
	xspi->remaining_bytes -= n_words * xspi->bits_per_word / 8;



	while (n_words--)

		if (xspi->tx_ptr)

		xilinx_spi_tx(xspi);

		else

			xspi->write_fn(0, xspi->regs + XSPI_TXD_OFFSET);

	return;

}