[PATCH v13 15/15] PCI: imx6: Disable clocks in reverse order of enable

From: Richard Zhu
Date: Fri Jun 17 2022 - 06:46:07 EST


From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>

imx6_pcie_clk_enable() enables clocks in the order:

pcie_phy
pcie_bus
pcie
imx6_pcie_enable_ref_clk

Change imx6_pcie_clk_disable() to disable them in the reverse order.

Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Richard Zhu <hongxing.zhu@xxxxxxx>
---
drivers/pci/controller/dwc/pci-imx6.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 363bfc4742cf..94ce77b674a3 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -655,10 +655,10 @@ static int imx6_pcie_clk_enable(struct imx6_pcie *imx6_pcie)

static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie)
{
+ imx6_pcie_disable_ref_clk(imx6_pcie);
clk_disable_unprepare(imx6_pcie->pcie);
- clk_disable_unprepare(imx6_pcie->pcie_phy);
clk_disable_unprepare(imx6_pcie->pcie_bus);
- imx6_pcie_disable_ref_clk(imx6_pcie);
+ clk_disable_unprepare(imx6_pcie->pcie_phy);
}

static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie)
--
2.25.1