From: Hans de Goede Date: Mon, 8 Jan 2018 09:44:16 +0000 (+0100) Subject: Bluetooth: btusb: Restore QCA Rome suspend/resume fix with a "rewritten" version X-Git-Tag: v4.14.20~37 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fed016a79b42943f7dea7409d107b641fe3d1080;p=platform%2Fkernel%2Flinux-rpi.git Bluetooth: btusb: Restore QCA Rome suspend/resume fix with a "rewritten" version commit 61f5acea8737d9b717fcc22bb6679924f3c82b98 upstream. Commit 7d06d5895c15 ("Revert "Bluetooth: btusb: fix QCA...suspend/resume"") removed the setting of the BTUSB_RESET_RESUME quirk for QCA Rome devices, instead favoring adding USB_QUIRK_RESET_RESUME quirks in usb/core/quirks.c. This was done because the DIY BTUSB_RESET_RESUME reset-resume handling has several issues (see the original commit message). An added advantage of moving over to the USB-core reset-resume handling is that it also disables autosuspend for these devices, which is similarly broken on these. But there are 2 issues with this approach: 1) It leaves the broken DIY BTUSB_RESET_RESUME code in place for Realtek devices. 2) Sofar only 2 of the 10 QCA devices known to the btusb code have been added to usb/core/quirks.c and if we fix the Realtek case the same way we need to add an additional 14 entries. So in essence we need to duplicate a large part of the usb_device_id table in btusb.c in usb/core/quirks.c and manually keep them in sync. This commit instead restores setting a reset-resume quirk for QCA devices in the btusb.c code, avoiding the duplicate usb_device_id table problem. This commit avoids the problems with the original DIY BTUSB_RESET_RESUME code by simply setting the USB_QUIRK_RESET_RESUME quirk directly on the usb_device. This commit also moves the BTUSB_REALTEK case over to directly setting the USB_QUIRK_RESET_RESUME on the usb_device and removes the now unused BTUSB_RESET_RESUME code. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1514836 Fixes: 7d06d5895c15 ("Revert "Bluetooth: btusb: fix QCA...suspend/resume"") Cc: Leif Liddy Cc: Matthias Kaehlcke Cc: Brian Norris Cc: Daniel Drake Cc: Kai-Heng Feng Signed-off-by: Hans de Goede Signed-off-by: Marcel Holtmann Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 0a97142..d54c3f6 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -23,6 +23,7 @@ #include #include +#include #include #include #include @@ -392,9 +393,8 @@ static const struct usb_device_id blacklist_table[] = { #define BTUSB_FIRMWARE_LOADED 7 #define BTUSB_FIRMWARE_FAILED 8 #define BTUSB_BOOTING 9 -#define BTUSB_RESET_RESUME 10 -#define BTUSB_DIAG_RUNNING 11 -#define BTUSB_OOB_WAKE_ENABLED 12 +#define BTUSB_DIAG_RUNNING 10 +#define BTUSB_OOB_WAKE_ENABLED 11 struct btusb_data { struct hci_dev *hdev; @@ -3099,6 +3099,12 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_QCA_ROME) { data->setup_on_usb = btusb_setup_qca; hdev->set_bdaddr = btusb_set_bdaddr_ath3012; + + /* QCA Rome devices lose their updated firmware over suspend, + * but the USB hub doesn't notice any status change. + * explicitly request a device reset on resume. + */ + interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; } #ifdef CONFIG_BT_HCIBTUSB_RTL @@ -3109,7 +3115,7 @@ static int btusb_probe(struct usb_interface *intf, * but the USB hub doesn't notice any status change. * Explicitly request a device reset on resume. */ - set_bit(BTUSB_RESET_RESUME, &data->flags); + interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; } #endif @@ -3274,14 +3280,6 @@ static int btusb_suspend(struct usb_interface *intf, pm_message_t message) enable_irq(data->oob_wake_irq); } - /* Optionally request a device reset on resume, but only when - * wakeups are disabled. If wakeups are enabled we assume the - * device will stay powered up throughout suspend. - */ - if (test_bit(BTUSB_RESET_RESUME, &data->flags) && - !device_may_wakeup(&data->udev->dev)) - data->udev->reset_resume = 1; - return 0; }