4.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
commit 16ea9b8ac45bf11d48af6013283e141e8ed86348 upstream.
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: 22417352f6b7f623 (Use polling mode on small transfers)
Reported-by: Edward Kigwana <ekigwana@xxxxxxxxxx>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-xilinx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -306,8 +306,10 @@ static int xilinx_spi_txrx_bufs(struct s
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;
}
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