[PATCH 4.14 04/23] net: ethernet: ti: cpts: Handle error for clk_enable

Greg Kroah-Hartman
2022-03-14T11:39:10Z

From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

[ Upstream commit 6babfc6e6fab068018c36e8f6605184b8c0b349d ]

As the potential failure of the clk_enable(),
it should be better to check it and return error
if fails.

Fixes: 8a2c9a5ab4b9 ("net: ethernet: ti: cpts: rework initialization/deinitialization")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/ti/cpts.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c
index 9e7e7e8a018d..232662cbc26a 100644
--- a/drivers/net/ethernet/ti/cpts.c
+++ b/drivers/net/ethernet/ti/cpts.c
@@ -440,7 +440,9 @@ int cpts_register(struct cpts *cpts)
for (i = 0; i < CPTS_MAX_EVENTS; i++)
list_add(&cpts->pool_data[i].list, &cpts->pool);

- clk_enable(cpts->refclk);
+ err = clk_enable(cpts->refclk);
+ if (err)
+ return err;

cpts_write32(cpts, CPTS_EN, control);
cpts_write32(cpts, TS_PEND_EN, int_enable);
--
2.34.1