SYSLINK: ipc - fixed return status for gatepeterson_open

This patch fixes the issues with the status returned from kernel
for gatepeterson_open. The following are the changes.
1. gatepeterson_open - changed the ENOENT to ENXIO, as ENOENT might
   be returned from nameserver and will translate to a different error
   code in user-space
2. gatepeterson_ioctl_open - returning the status of gatepeterson_open
   to the user-level in api_status.
Signed-off-by: Suman Anna <s-anna@ti.com>

drivers/dsp/syslink/multicore_ipc/gatepeterson.c

@@ -589,7 +589,7 @@ int gatepeterson_open(void **gphandle,
 
 	if (unlikely(((struct gatepeterson_attrs *)sharedaddr)->status !=
 						GATEPETERSON_CREATED)) {
-		retval = -ENOENT; /* Not created */
+		retval = -ENXIO; /* Not created */
 		goto noentry_fail;
 	}
 
@@ -698,8 +698,7 @@ handle_alloc_fail: /* Fall through */
 noentry_fail: /* Fall through */
 exit:
 	printk(KERN_ERR "gatepeterson_open failed status: %x\n", retval);
-	return retval;;
-
+	return retval;
 }
 EXPORT_SYMBOL(gatepeterson_open);
 

drivers/dsp/syslink/multicore_ipc/gatepeterson_ioctl.c

@@ -206,9 +206,8 @@ static int gatepeterson_ioctl_open(struct gatepeterson_cmd_args *cargs)
 	}
 
 	params.shared_addr = sharedregion_get_ptr((u32 *)params.shared_addr);
-	status = gatepeterson_open(&handle, &params);
+	cargs->api_status = gatepeterson_open(&handle, &params);
 	cargs->args.open.handle = handle;
-	cargs->api_status = 0;
 
 name_from_usr_error:
 	if (cargs->args.open.name_len > 0)