mmc: mtk-sd: Fix missing clk_disable_unprepare in msdc_of_clock_parse()

[ Upstream commit c61bfb1cb63ddab52b31cf5f1924688917e61fad ]

The clk_disable_unprepare() should be called in the error handling
of devm_clk_bulk_get_optional, fix it by replacing devm_clk_get_optional
and clk_prepare_enable by devm_clk_get_optional_enabled.

Fixes: f5eccd94b63f ("mmc: mediatek: Add subsys clock control for MT8192 msdc")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221125090141.3626747-1-cuigaosheng1@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 99d8881..9871c19 100644 (file)
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -2455,13 +2455,11 @@ static int msdc_of_clock_parse(struct platform_device *pdev,
        if (IS_ERR(host->src_clk_cg))
                host->src_clk_cg = NULL;
 
-       host->sys_clk_cg = devm_clk_get_optional(&pdev->dev, "sys_cg");
+       /* If present, always enable for this clock gate */
+       host->sys_clk_cg = devm_clk_get_optional_enabled(&pdev->dev, "sys_cg");
        if (IS_ERR(host->sys_clk_cg))
                host->sys_clk_cg = NULL;
 
-       /* If present, always enable for this clock gate */
-       clk_prepare_enable(host->sys_clk_cg);
-
        host->bulk_clks[0].id = "pclk_cg";
        host->bulk_clks[1].id = "axi_cg";
        host->bulk_clks[2].id = "ahb_cg";