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: Ricardo Ribalda Delgado <ricardo.riba...@gmail.com>
---
drivers/spi/spi-xilinx.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 6b6c658..514ad01 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -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);
+ xilinx_spi_tx(xspi);
return;
}
--
2.1.4
--
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