From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
To: "Mark Brown" <broonie@kernel.org>,
"Michal Simek" <michal.simek@xilinx.com>,
"Sören Brinkmann" <soren.brinkmann@xilinx.com>,
linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Subject: [PATCH] spi/spi-xilinx: Fix mixed poll/irq mode
Date: Wed, 12 Aug 2015 18:04:04 +0200 [thread overview]
Message-ID: <1439395444-25599-1-git-send-email-ricardo.ribalda@gmail.com> (raw)
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>
---
drivers/spi/spi-xilinx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 133f53a9c1d4..7abf6792cc11 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -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;
}
--
2.5.0
next reply other threads:[~2015-08-12 16:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-12 16:04 Ricardo Ribalda Delgado [this message]
[not found] ` <1439395444-25599-1-git-send-email-ricardo.ribalda-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-14 0:01 ` Applied "spi/spi-xilinx: Fix mixed poll/irq mode" to the spi tree Mark Brown
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