This is a note to let you know that I've just added the patch titled
uio_pdrv_genirq: fix use without device tree and no interrupt
to the 5.7-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_pdrv_genirq-fix-use-without-device-tree-and-no-interrupt.patch
and it can be found in the queue-5.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bf12fdf0ab728ca8e5933aac46dd972c0dd0421e Mon Sep 17 00:00:00 2001
From: Esben Haabendal <esben@xxxxxxxxxx>
Date: Wed, 1 Jul 2020 16:56:58 +0200
Subject: uio_pdrv_genirq: fix use without device tree and no interrupt
From: Esben Haabendal <esben@xxxxxxxxxx>
commit bf12fdf0ab728ca8e5933aac46dd972c0dd0421e upstream.
While e3a3c3a20555 ("UIO: fix uio_pdrv_genirq with device tree but no
interrupt") added support for using uio_pdrv_genirq for devices without
interrupt for device tree platforms, the removal of uio_pdrv in
26dac3c49d56 ("uio: Remove uio_pdrv and use uio_pdrv_genirq instead")
broke the support for non device tree platforms.
This change fixes this, so that uio_pdrv_genirq can be used without
interrupt on all platforms.
This still leaves the support that uio_pdrv had for custom interrupt
handler lacking, as uio_pdrv_genirq does not handle it (yet).
Fixes: 26dac3c49d56 ("uio: Remove uio_pdrv and use uio_pdrv_genirq instead")
Signed-off-by: Esben Haabendal <esben@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20200701145659.3978-3-esben@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/uio/uio_pdrv_genirq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -161,7 +161,7 @@ static int uio_pdrv_genirq_probe(struct
if (!uioinfo->irq) {
ret = platform_get_irq_optional(pdev, 0);
uioinfo->irq = ret;
- if (ret == -ENXIO && pdev->dev.of_node)
+ if (ret == -ENXIO)
uioinfo->irq = UIO_IRQ_NONE;
else if (ret == -EPROBE_DEFER)
return ret;
Patches currently in stable-queue which might be from esben@xxxxxxxxxx are
queue-5.7/uio_pdrv_genirq-fix-use-without-device-tree-and-no-interrupt.patch
queue-5.7/uio_pdrv_genirq-remove-warning-when-irq-is-not-specified.patch
