diff options
author | Philip Craig <phil@blackmoth.com.au> | 2013-06-17 13:56:33 +1000 |
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committer | Spencer Oliver <spen@spen-soft.co.uk> | 2013-09-25 15:28:07 +0000 |
commit | ff120440d66962b33fc84b2363d2197172fd2a6e (patch) | |
tree | 484a02b5e150f56de00af3c73d7037f724b354f3 /configure.ac | |
parent | 322f7dcceab2b1a7363c722d80571a5fd8637328 (diff) |
jlink: improve USB read during jlink_tap_execute
Previously, when doing EMU_CMD_HW_JTAG3 commands we would do two reads,
one to read the data, and one to read the result. However, we can just
do a single larger read instead.
The motivation for this change is a weird problem. If I run the Segger
software before running OpenOCD, then the first read always fails:
Error: usb_bulk_read failed (requested=1, result=0)
Error: jlink_tap_execute, wrong result -107 (expected 1)
Sniffing the USB traffic shows that the J-Link is returning an
overflow error, meaning it is expecting to return the full result
in a single read.
Change-Id: I75e020d3b3732c9a74ee3d31838fdf17a7fac24c
Signed-off-by: Philip Craig <phil@blackmoth.com.au>
Reviewed-on: http://openocd.zylin.com/1447
Tested-by: jenkins
Reviewed-by: Xiaofan <xiaofanc@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Diffstat (limited to 'configure.ac')
0 files changed, 0 insertions, 0 deletions