From: Wang Hai wanghai38@huawei.com
[ Upstream commit 50caa777a3a24d7027748e96265728ce748b41ef ]
Fix the missing clk_disable_unprepare() before return from emac_clks_phase1_init() in the error handling case.
Fixes: b9b17debc69d ("net: emac: emac gigabit ethernet controller driver") Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Wang Hai wanghai38@huawei.com Acked-by: Timur Tabi timur@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/qualcomm/emac/emac.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c index 759543512117c..5ab83751a471f 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac.c +++ b/drivers/net/ethernet/qualcomm/emac/emac.c @@ -493,13 +493,24 @@ static int emac_clks_phase1_init(struct platform_device *pdev,
ret = clk_prepare_enable(adpt->clk[EMAC_CLK_CFG_AHB]); if (ret) - return ret; + goto disable_clk_axi;
ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000); if (ret) - return ret; + goto disable_clk_cfg_ahb; + + ret = clk_prepare_enable(adpt->clk[EMAC_CLK_HIGH_SPEED]); + if (ret) + goto disable_clk_cfg_ahb;
- return clk_prepare_enable(adpt->clk[EMAC_CLK_HIGH_SPEED]); + return 0; + +disable_clk_cfg_ahb: + clk_disable_unprepare(adpt->clk[EMAC_CLK_CFG_AHB]); +disable_clk_axi: + clk_disable_unprepare(adpt->clk[EMAC_CLK_AXI]); + + return ret; }
/* Enable clocks; needs emac_clks_phase1_init to be called before */