This is a note to let you know that I've just added the patch titled
usb: musb: Fix external abort on non-linefetch for musb_irq_work()
to the 4.9-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:
usb-musb-fix-external-abort-on-non-linefetch-for-musb_irq_work.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Jun 15 16:23:30 CEST 2017
From: Tony Lindgren <tony@xxxxxxxxxxx>
Date: Tue, 24 Jan 2017 09:18:58 -0600
Subject: usb: musb: Fix external abort on non-linefetch for musb_irq_work()
From: Tony Lindgren <tony@xxxxxxxxxxx>
[ Upstream commit 3ba7b7795b7e8889af1377904c55c7fae9e0c775 ]
While testing musb host mode cable plugging on a BeagleBone, I came across this
error:
Unhandled fault: external abort on non-linefetch (0x1008) at 0xd1dcfc60
...
[<bf668390>] (musb_default_readb [musb_hdrc]) from [<bf668578>] (musb_irq_work+0x1c/0x180 [musb_hdrc])
[<bf668578>] (musb_irq_work [musb_hdrc]) from [<c0156554>] (process_one_work+0x2b4/0x808)
[<c0156554>] (process_one_work) from [<c015767c>] (worker_thread+0x3c/0x550)
[<c015767c>] (worker_thread) from [<c015d568>] (kthread+0x104/0x148)
[<c015d568>] (kthread) from [<c01078d0>] (ret_from_fork+0x14/0x24)
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Bin Liu <b-liu@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/musb/musb_core.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1909,6 +1909,14 @@ static void musb_pm_runtime_check_sessio
static void musb_irq_work(struct work_struct *data)
{
struct musb *musb = container_of(data, struct musb, irq_work.work);
+ int error;
+
+ error = pm_runtime_get_sync(musb->controller);
+ if (error < 0) {
+ dev_err(musb->controller, "Could not enable: %i\n", error);
+
+ return;
+ }
musb_pm_runtime_check_session(musb);
@@ -1916,6 +1924,9 @@ static void musb_irq_work(struct work_st
musb->xceiv_old_state = musb->xceiv->otg->state;
sysfs_notify(&musb->controller->kobj, NULL, "mode");
}
+
+ pm_runtime_mark_last_busy(musb->controller);
+ pm_runtime_put_autosuspend(musb->controller);
}
static void musb_recover_from_babble(struct musb *musb)
Patches currently in stable-queue which might be from tony@xxxxxxxxxxx are
queue-4.9/usb-musb-fix-external-abort-on-non-linefetch-for-musb_irq_work.patch