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usb: core: hub: add quirk for hub with broken autosuspend function

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Some USB host controller seems to have problems with
autosuspend. For example, Rockchip rk3328 SoC USB 3.0
wouldn't handle remote wakeup correctly with external
hub after entered autosuspend, caused to resume SS
port fail.

This patch introduces a new quirk flag for hub that
should remain disabled for autosuspend.

Change-Id: I6d14222b2c5025583fea811a6afd6abd22f41cb9
Signed-off-by: William Wu <wulf@rock-chips.com>
This commit is contained in:
William Wu 2017-02-21 16:02:36 +08:00 committed by Huang, Tao
parent ccff43617f
commit 52fc3f5c80
2 changed files with 5 additions and 1 deletions
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3
drivers/usb/core/hub.c
View File

@ -1711,7 +1711,8 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
* bus_resume methods.
*/
if (hdev->parent) { /* normal device */
usb_enable_autosuspend(hdev);
if (!(hdev->parent->quirks & USB_QUIRK_AUTO_SUSPEND))
usb_enable_autosuspend(hdev);
} else { /* root hub */
const struct hc_driver *drv = bus_to_hcd(hdev->bus)->driver;

3
include/linux/usb/quirks.h
View File

@ -50,4 +50,7 @@
/* device can't handle Link Power Management */
#define USB_QUIRK_NO_LPM BIT(10)
/* device can't support auto suspend function */
#define USB_QUIRK_AUTO_SUSPEND BIT(11)
#endif /* __LINUX_USB_QUIRKS_H */