USB Class MSC SCSI CB Length is wrong for 3 commands

[froha]

Describe the set-up Custom board with USB Host and stm32-mw-usb-host. A Zephyr device with a USB Device with MSC Class with the new USB Stack Next. CONFIG_USB_DEVICE_STACK_NEXT=y

Describe the bug The new Zephyr USB Device Stack checks the length of the SCSI command. The log of the Zephyr RTOS shows following: <err> usbd_msc: Unknown SCSI opcode 0x12 The message is not correct, because the length is wrong for this opcode.

The bug is that the stm32-mw-usb-host sets for all SCSI commands a length of 10. But the following commands has a length of 6:

Opcode: TEST_UNIT_READY Function: USBH_MSC_SCSI_TestUnitReady

Opcode: INQUIRY Function: USBH_MSC_SCSI_Inquiry

Opcode: REQUEST_SENSE Function: USBH_MSC_SCSI_RequestSense

In this functions it should be: MSC_Handle->hbot.cbw.field.CBLength = 6; instead of: MSC_Handle->hbot.cbw.field.CBLength = CBW_LENGTH;

#define CBW_LENGTH 10

For the other 3 commands (READ_CAPACITY10, WRITE10 and READ10) the length of 10 is correct.

How To Reproduce Use a Zephyr RTOS on a board (ST Board) and the Mass Storage example. A board with the stm32-mw-usb-host and MSC Class. For Zephyr RTOS you can enable following to show the error Message: CONFIG_USBD_MSC_LOG_LEVEL_ERR=y

Additional context SCSI commands description for example: https://www.seagate.com/files/staticfiles/support/docs/manual/Interface%20manuals/100293068j.pdf INQUIRY command page 92 REQUEST SENSE command page 195 TEST UNIT READY command page 230

The most software will ignore this problem, but not the new Zephyr USB Stack.