From: Dmitry Torokhov <dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Jiri Kosina <jikos-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Benjamin Tissoires
<benjamin.tissoires-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] HID: usbhid: fix "always poll" quirk
Date: Wed, 12 Jul 2017 17:14:24 -0700 [thread overview]
Message-ID: <20170713001424.GA7990@dtor-ws> (raw)
Even though the IO for devices with "always poll" quirk is already running,
we still need to set HID_OPENED bit in usbhid->iofl so the interrupt
handler does not ignore the data coming from the device.
Reported-by: Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>
Tested-by: Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>
Fixes: e399396a6b0 ("HID: usbhid: remove custom locking from usbhid_open...")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
drivers/hid/usbhid/hid-core.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 76013eb5cb7f..c008847e0b20 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -680,18 +680,21 @@ static int usbhid_open(struct hid_device *hid)
struct usbhid_device *usbhid = hid->driver_data;
int res;
+ set_bit(HID_OPENED, &usbhid->iofl);
+
if (hid->quirks & HID_QUIRK_ALWAYS_POLL)
return 0;
res = usb_autopm_get_interface(usbhid->intf);
/* the device must be awake to reliably request remote wakeup */
- if (res < 0)
+ if (res < 0) {
+ clear_bit(HID_OPENED, &usbhid->iofl);
return -EIO;
+ }
usbhid->intf->needs_remote_wakeup = 1;
set_bit(HID_RESUME_RUNNING, &usbhid->iofl);
- set_bit(HID_OPENED, &usbhid->iofl);
set_bit(HID_IN_POLLING, &usbhid->iofl);
res = hid_start_in(hid);
@@ -727,19 +730,20 @@ static void usbhid_close(struct hid_device *hid)
{
struct usbhid_device *usbhid = hid->driver_data;
- if (hid->quirks & HID_QUIRK_ALWAYS_POLL)
- return;
next reply other threads:[~2017-07-13 0:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-13 0:14 Dmitry Torokhov [this message]
2017-07-21 9:26 ` [PATCH] HID: usbhid: fix "always poll" quirk Benjamin Tissoires
2017-07-21 16:15 ` Jiri Kosina
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