From: Andy Shevchenko andriy.shevchenko@linux.intel.com
[ Upstream commit ebc37af5e0a134355ea2b62ed4141458bdbd5389 ]
The device_for_each_child() doesn't require the returned value to be checked. Thus, drop the dummy variable completely and have no warning anymore:
drivers/spi/spi.c: In function ‘spi_unregister_controller’: drivers/spi/spi.c:2480:6: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable] int dummy; ^~~~~
Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 88a8a8edd44b..0022a49797f9 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -2305,7 +2305,6 @@ void spi_unregister_controller(struct spi_controller *ctlr) { struct spi_controller *found; int id = ctlr->bus_num; - int dummy;
/* First make sure that this controller was ever added */ mutex_lock(&board_lock); @@ -2319,7 +2318,7 @@ void spi_unregister_controller(struct spi_controller *ctlr) list_del(&ctlr->list); mutex_unlock(&board_lock);
- dummy = device_for_each_child(&ctlr->dev, NULL, __unregister); + device_for_each_child(&ctlr->dev, NULL, __unregister); device_unregister(&ctlr->dev); /* free bus id */ mutex_lock(&board_lock);