The linux kernel's tcm_usb_gadget requires the US_FL_NO_ATA_1X quirk. It does not respond to the ATA_12 family of commands and hangs. The host prevents the issuing of ATA_12 commands to the TCM module, by introducing this quirk, the host is permitted to proceed with other operations. Signed-off-by: Piyush Mehta <piyush.mehta@xxxxxxx> --- drivers/usb/storage/unusual_uas.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h index 1f8c9b16a0fb..2fc0220c72ee 100644 --- a/drivers/usb/storage/unusual_uas.h +++ b/drivers/usb/storage/unusual_uas.h @@ -177,6 +177,13 @@ UNUSUAL_DEV(0x4971, 0x8017, 0x0000, 0x9999, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NO_REPORT_OPCODES), +/* Reported-by: Piyush Mehta <piyush.mehta@xxxxxxx> */ +UNUSUAL_DEV(0x0525, 0xa4a5, 0x0000, 0x9999, + "NetChip", + "Target Product", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_NO_ATA_1X), + /* "G-DRIVE" external HDD hangs on write without these. * Patch submitted by Alexander Kappner <agk@xxxxxxxxxxx> */ -- 2.25.1
