Attachment 944268 Details for Bug 1149509 – HID-usbhid-add-always-poll-quirk

[patch] HID-usbhid-add-always-poll-quirk

0001-Add-new-quirk-for-devices-that-cannot-handle-request.patch (text/plain), 1.62 KB, created by Adel Gadllah on 2014-10-06 14:05:54 UTC

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Creator: Adel Gadllah

Created: 2014-10-06 14:05:54 UTC

Size: 1.62 KB

patch

obsolete

>From a2f08468113d46906844a79cd0c705a27f837649 Mon Sep 17 00:00:00 2001
>From: Johan Hovold <johan@kernel.org>
>Date: Sun, 5 Oct 2014 17:53:28 +0200
>Subject: [PATCH 1/3] Add new quirk for devices that cannot handle requests for
> the device_qualifier descriptor.
>MIME-Version: 1.0
>Content-Type: text/plain; charset=UTF-8
>Content-Transfer-Encoding: 8bit
>
>A USB-2.0 compliant device must respond to requests for the
>device_qualifier descriptor (even if it's with a request error), but at
>least one device is known to misbehave after such a request.
>
>Suggested-by: BjÃ¸rn Mork <bjorn@mork.no>
>Signed-off-by: Johan Hovold <johan@kernel.org>
>Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>---
> drivers/usb/core/hub.c     | 3 +++
> include/linux/usb/quirks.h | 3 +++
> 2 files changed, 6 insertions(+)
>
>diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
>index 0e950ad..e563164 100644
>--- a/drivers/usb/core/hub.c
>+++ b/drivers/usb/core/hub.c
>@@ -4475,6 +4475,9 @@ check_highspeed (struct usb_hub *hub, struct usb_device *udev, int port1)
> 	struct usb_qualifier_descriptor	*qual;
> 	int				status;
> 
>+	if (udev->quirks & USB_QUIRK_DEVICE_QUALIFIER)
>+		return;
>+
> 	qual = kmalloc (sizeof *qual, GFP_KERNEL);
> 	if (qual == NULL)
> 		return;
>diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h
>index 52f944d..4681e0f 100644
>--- a/include/linux/usb/quirks.h
>+++ b/include/linux/usb/quirks.h
>@@ -30,4 +30,7 @@
>    descriptor */
> #define USB_QUIRK_DELAY_INIT		0x00000040
> 
>+/* device can't handle device_qualifier descriptor requests */
>+#define USB_QUIRK_DEVICE_QUALIFIER	0x00000100
>+
> #endif /* __LINUX_USB_QUIRKS_H */
>-- 
>1.9.3
>

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Attachments on bug 1149509: 944048 | 944049 | 944050 | 944268 | 944269 | 944270 | 944663 | 944664 | 944665 | 944666 | 944669