drivers/stlink_usb: fix stlink_usb_read_regs() for API v2 24/4824/3
authorAntonio Borneo <borneo.antonio@gmail.com>
Fri, 7 Dec 2018 21:11:12 +0000 (22:11 +0100)
committerTomas Vanek <vanekt@fbl.cz>
Fri, 8 Mar 2019 06:01:52 +0000 (06:01 +0000)
commitd46b28983dc27369e90f4dc8a0e54b5057583b38
treea0156bcb444da6d89cde94db755a73ed5a5007b4
parent720380f9e372d9bab19445ff300ef1cb58e70a12
drivers/stlink_usb: fix stlink_usb_read_regs() for API v2

API v2 implementation for command READALLREGS returns the status
in the first two bytes, followed by two bytes of padding.
This makes the reply 4 bytes longer and changes the offset of the
first register value to 4.

Fix it for the case API v2 and clean-up the management of the
return value.

Change-Id: I448c82bcc0baa72d66fdfe7f0c525b94f8a4468b
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4824
Tested-by: jenkins
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
src/jtag/drivers/stlink_usb.c