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cortex_m: add missing error checking 

found by clang.

Change-Id: I099c6fe6b044dba36c20221cb439bdcba5a6bb6f
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Reviewed-on: http://openocd.zylin.com/152
Tested-by: jenkins
Reviewed-by: Peter Stuge <peter@stuge.se>
This commit is contained in:
Øyvind Harboe 2011-11-01 22:53:54 +01:00 committed by Peter Stuge
parent 06216744ed
commit 2ea7a42e22
1 changed files with 6 additions and 2 deletions
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8
src/target/cortex_m.c
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@ -124,16 +124,20 @@ static int cortexm3_dap_write_coreregister_u32(struct adiv5_dap *swjdp,
if (retval != ERROR_OK)
return retval;
retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value);
// XXX check retval
if (retval != ERROR_OK)
return retval;
/* mem_ap_write_u32(swjdp, DCB_DCRSR, i | DCRSR_WnR); */
retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0);
if (retval != ERROR_OK)
return retval;
retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum | DCRSR_WnR);
// XXX check retval
if (retval != ERROR_OK)
return retval;
retval = dap_run(swjdp);
if (retval != ERROR_OK)
return retval;
/* restore DCB_DCRDR - this needs to be in a seperate
* transaction otherwise the emulated DCC channel breaks */