diff options
| author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2015-08-12 18:04:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-21 10:05:42 -0700 |
| commit | 7aa3b3b1d7838a75ad91fce91f187d26aacaa682 (patch) | |
| tree | 75a9d4185c8f9f696753927e55f4ac5ed186b6da | |
| parent | 7d3cb0eecda8d19007f0004a3af071ed1bc997b7 (diff) | |
spi/spi-xilinx: Fix mixed poll/irq mode
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@scires.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/spi/spi-xilinx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index 8a81a692f764..a339c1e9997a 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -306,8 +306,10 @@ 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; } |