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workaround and comment for problems identified by Michael Schwingen. 

git-svn-id: svn://svn.berlios.de/openocd/trunk@979 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe 2008-09-05 06:52:07 +00:00
parent a0eace708d
commit fa9bbd3828
1 changed files with 12 additions and 0 deletions
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12
src/target/cortex_swjdp.c
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@ -177,7 +177,19 @@ int swjdp_transaction_endcheck(swjdp_common_t *swjdp)
keep_alive(); keep_alive();
/* Danger!!!! BROKEN!!!! */
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
/* Danger!!!! BROKEN!!!! Why will jtag_execute_queue() fail here????
R956 introduced the check on return value here and now Michael Schwingen reports
that this code no longer works....
https://lists.berlios.de/pipermail/openocd-development/2008-September/003107.html
*/
if ((retval=jtag_execute_queue())!=ERROR_OK)
{
LOG_ERROR("BUG: Why does this fail the first time????");
}
/* Why??? second time it works??? */
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat); scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
if ((retval=jtag_execute_queue())!=ERROR_OK) if ((retval=jtag_execute_queue())!=ERROR_OK)
return retval; return retval;