ice: reregister fwlog after driver reinit

Wrap libie_fwlog_register() by libie_fwlog_reregister(), which checks
first if the registration is needed. This simplifies the code and makes
the former function static.

Reviewed-by: Przemek Kitszel <[e-mail]>
Signed-off-by: Michal Swiatkowski <[e-mail]>
Tested-by: Rinitha S <[e-mail]> (A Contingent worker at Intel)
Reviewed-by: Simon Horman <[e-mail]>
Signed-off-by: Tony Nguyen <[e-mail]>

drivers/net/ethernet/intel/ice/ice_fwlog.c

···
  * After this call the PF will start to receive firmware logging based on the
  * configuration set in libie_fwlog_set.
  */
-int libie_fwlog_register(struct libie_fwlog *fwlog)
+static int libie_fwlog_register(struct libie_fwlog *fwlog)
 {
 	int status;
 
···
 		/* the rings are full so bump the head to create room */
 		libie_fwlog_ring_increment(&fwlog->ring.head, fwlog->ring.size);
 	}
+}
+
+void libie_fwlog_reregister(struct libie_fwlog *fwlog)
+{
+	if (!(fwlog->cfg.options & LIBIE_FWLOG_OPTION_IS_REGISTERED))
+		return;
+
+	if (libie_fwlog_register(fwlog))
+		fwlog->cfg.options &= ~LIBIE_FWLOG_OPTION_IS_REGISTERED;
 }

drivers/net/ethernet/intel/ice/ice_fwlog.h

···
 
 int libie_fwlog_init(struct libie_fwlog *fwlog, struct libie_fwlog_api *api);
 void libie_fwlog_deinit(struct libie_fwlog *fwlog);
-int libie_fwlog_register(struct libie_fwlog *fwlog);
+void libie_fwlog_reregister(struct libie_fwlog *fwlog);
 void libie_get_fwlog_data(struct libie_fwlog *fwlog, u8 *buf, u16 len);
 #endif /* _LIBIE_FWLOG_H_ */