This is a note to let you know that I've just added the patch titled
uio: fix devm_request_irq usage
to the 3.13-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:
uio-fix-devm_request_irq-usage.patch
and it can be found in the queue-3.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 632fefaf1fff7c344191c363e08a43cf006fe60e Mon Sep 17 00:00:00 2001
From: Aaro Koskinen <aaro.koskinen@xxxxxxx>
Date: Fri, 20 Dec 2013 16:19:47 +0200
Subject: uio: fix devm_request_irq usage
From: Aaro Koskinen <aaro.koskinen@xxxxxxx>
commit 632fefaf1fff7c344191c363e08a43cf006fe60e upstream.
Commit e6789cd3dfb553077606ccafeb05e0043f072481 (uio: Simplify uio error
path by using devres functions) converted uio to use devm_request_irq().
This introduced a change in behaviour since the IRQ is associated with
the parent device instead of the created UIO device. The IRQ will remain
active after uio_unregister_device() is called, and some drivers will
crash because of this. The patch fixes this.
Signed-off-by: Aaro Koskinen <aaro.koskinen@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/uio/uio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -847,7 +847,7 @@ int __uio_register_device(struct module
info->uio_dev = idev;
if (info->irq && (info->irq != UIO_IRQ_CUSTOM)) {
- ret = devm_request_irq(parent, info->irq, uio_interrupt,
+ ret = devm_request_irq(idev->dev, info->irq, uio_interrupt,
info->irq_flags, info->name, idev);
if (ret)
goto err_request_irq;
Patches currently in stable-queue which might be from aaro.koskinen@xxxxxxx are
queue-3.13/uio-fix-devm_request_irq-usage.patch
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