[PATCH 1/3] net: fec: Remove redundant checks for NULL clk pointer

Lothar Waßmann
2015-11-30T11:32:46Z

NULL is a valid argument to clk_enable()/clk_disable(). Remove
redundant checks before calling those functions.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
---
drivers/net/ethernet/freescale/fec_main.c | 23 +++++++++--------------
1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index d2328fc..e17d74f 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1873,35 +1873,30 @@ static int fec_enet_clk_enable(struct net_device *ndev, bool enable)
}
mutex_unlock(&fep->ptp_clk_mutex);
}
- if (fep->clk_ref) {
- ret = clk_prepare_enable(fep->clk_ref);
- if (ret)
- goto failed_clk_ref;
- }
+
+ ret = clk_prepare_enable(fep->clk_ref);
+ if (ret)
+ goto failed_clk_ref;
} else {
clk_disable_unprepare(fep->clk_ahb);
- if (fep->clk_enet_out)
- clk_disable_unprepare(fep->clk_enet_out);
+ clk_disable_unprepare(fep->clk_enet_out);
if (fep->clk_ptp) {
mutex_lock(&fep->ptp_clk_mutex);
clk_disable_unprepare(fep->clk_ptp);
fep->ptp_clk_on = false;
mutex_unlock(&fep->ptp_clk_mutex);
}
- if (fep->clk_ref)
- clk_disable_unprepare(fep->clk_ref);
+ clk_disable_unprepare(fep->clk_ref);
}

return 0;

failed_clk_ref:
- if (fep->clk_ref)
- clk_disable_unprepare(fep->clk_ref);
+ clk_disable_unprepare(fep->clk_ref);
failed_clk_ptp:
- if (fep->clk_enet_out)
- clk_disable_unprepare(fep->clk_enet_out);
+ clk_disable_unprepare(fep->clk_enet_out);
failed_clk_enet_out:
- clk_disable_unprepare(fep->clk_ahb);
+ clk_disable_unprepare(fep->clk_ahb);

return ret;
}
--
2.1.4