6.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiayi Li lijiayi@kylinos.cn
commit 19f795591947596b5b9efa86fd4b9058e45786e9 upstream.
This device exhibits I/O errors during file transfers due to unstable link power management (LPM) behavior. The kernel logs show repeated warm resets and eventual disconnection when LPM is enabled:
[ 3467.810740] hub 2-0:1.0: state 7 ports 6 chg 0000 evt 0020 [ 3467.810740] usb usb2-port5: do warm reset [ 3467.866444] usb usb2-port5: not warm reset yet, waiting 50ms [ 3467.907407] sd 0:0:0:0: [sda] tag#12 sense submit err -19 [ 3467.994423] usb usb2-port5: status 02c0, change 0001, 10.0 Gb/s [ 3467.994453] usb 2-5: USB disconnect, device number 4
The error -19 (ENODEV) occurs when the device disappears during write operations. Adding USB_QUIRK_NO_LPM disables link power management for this specific device, resolving the stability issues.
Signed-off-by: Jiayi Li lijiayi@kylinos.cn Cc: stable stable@kernel.org Link: https://lore.kernel.org/r/20250508055947.764538-1-lijiayi@kylinos.cn Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/core/quirks.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -372,6 +372,9 @@ static const struct usb_device_id usb_qu /* SanDisk Corp. SanDisk 3.2Gen1 */ { USB_DEVICE(0x0781, 0x55a3), .driver_info = USB_QUIRK_DELAY_INIT },
+ /* SanDisk Extreme 55AE */ + { USB_DEVICE(0x0781, 0x55ae), .driver_info = USB_QUIRK_NO_LPM }, + /* Realforce 87U Keyboard */ { USB_DEVICE(0x0853, 0x011b), .driver_info = USB_QUIRK_NO_LPM },