Commit 16ea9b8a authored Aug 12, 2015 by Ricardo Ribalda Delgado Committed by Mark Brown Aug 13, 2015

spi/spi-xilinx: Fix mixed poll/irq mode



Once the module process a transfer in irq mode, the next poll transfer
will not work because the transmitter is left in inhibited state.

Fixes: 22417352 (Use polling mode on small transfers)
Reported-by: Edward Kigwana <ekigwana@scires.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

parent bc0195aa

drivers/spi/spi-xilinx.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -302,8 +302,10 @@ static int xilinx_spi_txrx_bufs(struct spi_device spi, struct spi_transfer t)
		remaining_words -= n_words;
		}

		if (use_irq)
		if (use_irq) {
		xspi->write_fn(0, xspi->regs + XIPIF_V123B_DGIER_OFFSET);
		xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET);
		}

		return t->len;
		}