greybus: es2: allow ARPC result to be ignored
Allow user of ARPC to pass a NULL pointer for the ARPC result.
For simple requests there may only be one error code for remote errors,
or the caller may simply not care to differentiate them.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c
index c31124d..8d0e52d 100644
--- a/drivers/staging/greybus/es2.c
+++ b/drivers/staging/greybus/es2.c
@@ -1184,7 +1184,8 @@
unsigned long flags;
int retval;
- *result = 0;
+ if (result)
+ *result = 0;
rpc = arpc_alloc(payload, size, type);
if (!rpc)
@@ -1209,7 +1210,8 @@
if (rpc->resp->result) {
retval = -EREMOTEIO;
- *result = rpc->resp->result;
+ if (result)
+ *result = rpc->resp->result;
} else {
retval = 0;
}
