x86: mp_init: Use proper error numbers

At present many of the functions in this file return -1 as an error
number. which is -EPERM. Update the code to use real error numbers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c
index ea64c2e..fefbf8f 100644 (file)
--- a/arch/x86/cpu/mp_init.c
+++ b/arch/x86/cpu/mp_init.c
@@ -322,7 +322,7 @@ static int start_aps(int ap_count, atomic_t *num_aps)
        if (sipi_vector > max_vector_loc) {
                printf("SIPI vector too large! 0x%08x\n",
                       sipi_vector);
-               return -1;
+               return -ENOSPC;
        }
 
        debug("Attempting to start %d APs\n", ap_count);
@@ -364,7 +364,7 @@ static int start_aps(int ap_count, atomic_t *num_aps)
        if (wait_for_aps(num_aps, ap_count, 10000, 50)) {
                debug("Not all APs checked in: %d/%d\n",
                      atomic_read(num_aps), ap_count);
-               return -1;
+               return -EIO;
        }
 
        return 0;
@@ -387,7 +387,7 @@ static int bsp_do_flight_plan(struct udevice *cpu, struct mp_params *mp_params)
                        if (wait_for_aps(&rec->cpus_entered, num_aps,
                                         timeout_us, step_us)) {
                                debug("MP record %d timeout\n", i);
-                               ret = -1;
+                               ret = -ETIMEDOUT;
                        }
                }
 
@@ -508,7 +508,7 @@ int mp_init(struct mp_params *p)
 
        if (p == NULL || p->flight_plan == NULL || p->num_records < 1) {
                printf("Invalid MP parameters\n");
-               return -1;
+               return -EINVAL;
        }
 
        num_cpus = cpu_get_count(cpu);
@@ -531,7 +531,7 @@ int mp_init(struct mp_params *p)
        /* Load the SIPI vector */
        ret = load_sipi_vector(&ap_count, num_cpus);
        if (ap_count == NULL)
-               return -1;
+               return -ENOENT;
 
        /*
         * Make sure SIPI data hits RAM so the APs that come up will see