Commit 4718c1774051 ("usb: host: xhci-plat: add clock support") adds
optional clk support, but it forgets to prepare/disable and
enable/unprepare the clk in the resume/suspend path. This path fixes
this issue by adding missing clk related calls.
Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
Fixes: 4718c1774051 ("usb: host: xhci-plat: add clock support")
---
drivers/usb/host/xhci-plat.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 474b5fa..8cb46cb 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -295,6 +295,7 @@ static int xhci_plat_remove(struct platform_device *dev)
#ifdef CONFIG_PM_SLEEP
static int xhci_plat_suspend(struct device *dev)
{
+ int ret;
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
@@ -306,14 +307,25 @@ static int xhci_plat_suspend(struct device *dev)
* reconsider this when xhci_plat_suspend enlarges its scope, e.g.,
* also applies to runtime suspend.
*/
- return xhci_suspend(xhci, device_may_wakeup(dev));
+ ret = xhci_suspend(xhci, device_may_wakeup(dev));
+ if (ret)
+ return ret;
+
+ clk_disable_unprepare(xhci->clk);
+
+ return ret;
}
static int xhci_plat_resume(struct device *dev)
{
+ int ret;
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ ret = clk_prepare_enable(xhci->clk);
+ if (ret)
+ return ret;
+
return xhci_resume(xhci, 0);
}
--
2.8.1
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