cortex a8: add error propagation for poll/resume

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

diff --git a/src/target/cortex_a8.c b/src/target/cortex_a8.c
index c39dba336621d36cb0288e1d8107a3492d0acc45..ee79d63f793c95c3eac2a1fb0951ba40244676f9 100644 (file)
--- a/src/target/cortex_a8.c
+++ b/src/target/cortex_a8.c
@@ -98,12 +98,15 @@ static int cortex_a8_init_debug_access(struct target *target)
        /* Clear Sticky Power Down status Bit in PRSR to enable access to
           the registers in the Core Power Domain */
        retval = mem_ap_read_atomic_u32(swjdp, armv7a->debug_base + CPUDBG_PRSR, &dummy);
+       if (retval != ERROR_OK)
+               return retval;
+
        /* Enabling of instruction execution in debug mode is done in debug_entry code */
 
        /* Resync breakpoint registers */
 
        /* Since this is likley called from init or reset, update targtet state information*/
-       cortex_a8_poll(target);
+       retval = cortex_a8_poll(target);
 
        return retval;
 }
@@ -1005,6 +1008,7 @@ static int cortex_a8_step(struct target *target, int current, uint32_t address,
        struct breakpoint *breakpoint = NULL;
        struct breakpoint stepbreakpoint;
        struct reg *r;
+       int retval;
 
        int timeout = 100;
 
@@ -1048,15 +1052,19 @@ static int cortex_a8_step(struct target *target, int current, uint32_t address,
 
        target->debug_reason = DBG_REASON_SINGLESTEP;
 
-       cortex_a8_resume(target, 1, address, 0, 0);
+       retval = cortex_a8_resume(target, 1, address, 0, 0);
+       if (retval != ERROR_OK)
+               return retval;
 
        while (target->state != TARGET_HALTED)
        {
-               cortex_a8_poll(target);
+               retval = cortex_a8_poll(target);
+               if (retval != ERROR_OK)
+                       return retval;
                if (--timeout == 0)
                {
-                       LOG_WARNING("timeout waiting for target halt");
-                       break;
+                       LOG_ERROR("timeout waiting for target halt");
+                       return ERROR_FAIL;
                }
        }
 
@@ -1313,6 +1321,8 @@ static int cortex_a8_deassert_reset(struct target *target)
        jtag_add_reset(0, 0);
 
        retval = cortex_a8_poll(target);
+       if (retval != ERROR_OK)
+               return retval;
 
        if (target->reset_halt) {
                if (target->state != TARGET_HALTED) {