Patch "spi/spi-xilinx: Fix mixed poll/irq mode" has been added to the 4.1-stable tree

Patch "spi/spi-xilinx: Fix mixed poll/irq mode" has been added to the 4.1-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 4.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     spi-spi-xilinx-fix-mixed-poll-irq-mode.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 16ea9b8ac45bf11d48af6013283e141e8ed86348 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Date: Wed, 12 Aug 2015 18:04:04 +0200
Subject: spi/spi-xilinx: Fix mixed poll/irq mode

From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>

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>

---
 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;
 }


Patches currently in stable-queue which might be from ricardo.ribalda@gmail.com are

queue-4.1/spi-spi-xilinx-fix-mixed-poll-irq-mode.patch
queue-4.1/spi-spi-xilinx-fix-spurious-irq-ack-on-irq-mode.patch