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USB: storage: Ignore driver CD mode for Realtek multi-mode Wi-Fi dongles

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Many Realtek USB Wi-Fi dongles released in recent years have two modes:
one is driver CD mode which has Windows driver onboard, another one is
Wi-Fi mode. Add the US_FL_IGNORE_DEVICE quirk for these multi-mode devices.
Otherwise, usb_modeswitch may fail to switch them to Wi-Fi mode.

Currently there are only two USB IDs known to be used by these multi-mode
Wi-Fi dongles: 0bda:1a2b and 0bda:a192.

Information about Mercury MW310UH in /sys/kernel/debug/usb/devices.
T:  Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 12 Spd=480  MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=0bda ProdID=a192 Rev= 2.00
S:  Manufacturer=Realtek
S:  Product=DISK
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=(none)
E:  Ad=8a(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=0b(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

Information about D-Link AX9U rev. A1 in /sys/kernel/debug/usb/devices.
T:  Bus=03 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#= 55 Spd=480  MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=0bda ProdID=1a2b Rev= 0.00
S:  Manufacturer=Realtek
S:  Product=DISK
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=(none)
E:  Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

Cc: stable <stable@kernel.org>
Signed-off-by: Zenm Chen <zenmchen@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20250813162415.2630-1-zenmchen@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zenm Chen 2025-08-14 00:24:15 +08:00 • committed by Greg Kroah-Hartman
parent 98da66a70a
commit a3dc32c635
1 changed files with 22 additions and 0 deletions
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22
drivers/usb/storage/unusual_devs.h
View file

@ -1501,6 +1501,28 @@ UNUSUAL_DEV( 0x0bc2, 0x3332, 0x0000, 0x9999,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_NO_WP_DETECT ),
/*
* Reported by Zenm Chen <zenmchen@gmail.com>
* Ignore driver CD mode, otherwise usb_modeswitch may fail to switch
* the device into Wi-Fi mode.
*/
UNUSUAL_DEV( 0x0bda, 0x1a2b, 0x0000, 0xffff,
"Realtek",
"DISK",
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_IGNORE_DEVICE ),
/*
* Reported by Zenm Chen <zenmchen@gmail.com>
* Ignore driver CD mode, otherwise usb_modeswitch may fail to switch
* the device into Wi-Fi mode.
*/
UNUSUAL_DEV( 0x0bda, 0xa192, 0x0000, 0xffff,
"Realtek",
"DISK",
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_IGNORE_DEVICE ),
UNUSUAL_DEV( 0x0d49, 0x7310, 0x0000, 0x9999,
"Maxtor",
"USB to SATA",