| Message ID | 20240625070724.22044-1-tuhaowen@uniontech.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drv/usb: Fix the issue with Realtek USB wireless adapter AC650 | expand |
On Tue, Jun 25, 2024 at 03:07:24PM +0800, tuhaowen wrote: > Due to the dual-mode functionality of the Realtek USB wireless > adapter AC650, it initially presents itself as a flash drive > before the driver is installed. Does this flash-drive mode have a real purpose? For instance, can people upload new firmware by writing it to the flash drive? I can't imagine that the manufacturer would have implemented the dual-mode functionality for no reason at all. > In Linux, multi-state devices are recognized as storage devices > on startup because the driver has not yet been loaded. > > As a result, the AC650 is identified as a DISK device at boot, > preventing the use of its WLAN mode. The issue can only be > resolved by unplugging and replugging the adapter. If there's no way to resolve this issue other than by unplugging and replugging the adapter, how can a patch help? Are you sure that the problem can't be solved by a userspace helper, such as the usbmodeswitch program? Alan Stern > Signed-off-by: tuhaowen <tuhaowen@uniontech.com> > --- > drivers/usb/storage/unusual_devs.h | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h > index fd68204374f2..f660d3e52436 100644 > --- a/drivers/usb/storage/unusual_devs.h > +++ b/drivers/usb/storage/unusual_devs.h > @@ -1487,6 +1487,12 @@ UNUSUAL_DEV( 0x0bc2, 0x3332, 0x0000, 0x9999, > USB_SC_DEVICE, USB_PR_DEVICE, NULL, > US_FL_NO_WP_DETECT ), > > +UNUSUAL_DEV(0x0bda, 0x1a2b, 0x0000, 0x9999, > + "Realtek", > + "USB Network Device", > + USB_SC_DEVICE, USB_PR_DEVICE, NULL, > + US_FL_IGNORE_DEVICE), > + > UNUSUAL_DEV( 0x0d49, 0x7310, 0x0000, 0x9999, > "Maxtor", > "USB to SATA", > -- > 2.20.1 > >
On 2024-06-25 14:07, tuhaowen wrote: > Due to the dual-mode functionality of the Realtek USB wireless > adapter AC650, it initially presents itself as a flash drive > before the driver is installed. > > In Linux, multi-state devices are recognized as storage devices > on startup because the driver has not yet been loaded. > > As a result, the AC650 is identified as a DISK device at boot, > preventing the use of its WLAN mode. The issue can only be > resolved by unplugging and replugging the adapter. > It can be resolved by manually ejecting the created cdrom drive or by using usb_modeswitch which will eject the drive as soon as it is detected. No need for unplugging/replugging. thanks Lars
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index fd68204374f2..f660d3e52436 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -1487,6 +1487,12 @@ UNUSUAL_DEV( 0x0bc2, 0x3332, 0x0000, 0x9999, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NO_WP_DETECT ), +UNUSUAL_DEV(0x0bda, 0x1a2b, 0x0000, 0x9999, + "Realtek", + "USB Network Device", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_IGNORE_DEVICE), + UNUSUAL_DEV( 0x0d49, 0x7310, 0x0000, 0x9999, "Maxtor", "USB to SATA",
Due to the dual-mode functionality of the Realtek USB wireless adapter AC650, it initially presents itself as a flash drive before the driver is installed. In Linux, multi-state devices are recognized as storage devices on startup because the driver has not yet been loaded. As a result, the AC650 is identified as a DISK device at boot, preventing the use of its WLAN mode. The issue can only be resolved by unplugging and replugging the adapter. Signed-off-by: tuhaowen <tuhaowen@uniontech.com> --- drivers/usb/storage/unusual_devs.h | 6 ++++++ 1 file changed, 6 insertions(+)