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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: 22417352f6 (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
hifive-unleashed-5.1
Ricardo Ribalda Delgado 2015-08-12 18:04:04 +02:00 committed by Mark Brown
parent bc0195aad0
commit 16ea9b8ac4
1 changed files with 3 additions and 1 deletions
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4
drivers/spi/spi-xilinx.c
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@ -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;
}