Patch "spi: img-spfi: check for timeout error before proceeding" has been added to the 4.2-stable tree

Patch "spi: img-spfi: check for timeout error before proceeding" has been added to the 4.2-stable tree

[gregkh]

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

    spi: img-spfi: check for timeout error before proceeding

to the 4.2-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-img-spfi-check-for-timeout-error-before-proceeding.patch
and it can be found in the queue-4.2 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 011710e2ab659c7ad6e5e554806414bd7a9508be Mon Sep 17 00:00:00 2001
From: Sifan Naeem <sifan.naeem@imgtec.com>
Date: Mon, 27 Jul 2015 13:11:15 +0100
Subject: spi: img-spfi: check for timeout error before proceeding

From: Sifan Naeem <sifan.naeem@imgtec.com>

commit 011710e2ab659c7ad6e5e554806414bd7a9508be upstream.

Calling spfi_wait_all_done is not required if the transfer has timed
out before all data is transferred.

spfi_wait_all_done polls for Alldone interrupt which is triggered to
mark the transfer as complete and to indicate it is now safe to issue
a new transfer.

Fixes: 8c2c8c0 ("spi: img-spfi: Control CS lines with GPIO")
Signed-off-by: Sifan Naeem <sifan.naeem@imgtec.com>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/spi/spi-img-spfi.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -267,15 +267,15 @@ static int img_spfi_start_pio(struct spi
 		cpu_relax();
 	}
 
-	ret = spfi_wait_all_done(spfi);
-	if (ret < 0)
-		return ret;
-
 	if (rx_bytes > 0 || tx_bytes > 0) {
 		dev_err(spfi->dev, "PIO transfer timed out\n");
 		return -ETIMEDOUT;
 	}
 
+	ret = spfi_wait_all_done(spfi);
+	if (ret < 0)
+		return ret;
+
 	return 0;
 }
 


Patches currently in stable-queue which might be from sifan.naeem@imgtec.com are

queue-4.2/spi-img-spfi-check-for-timeout-error-before-proceeding.patch
queue-4.2/spi-img-spfi-fix-multiple-calls-to-request-gpio.patch
queue-4.2/spi-img-spfi-fix-kbuild-test-robot-warning.patch