cdns_role_driver->resume() receives the information if power was lost
across suspend (ie if a reset occurred). Transmit that to the XHCI core
using the newly introduced lost_power flag. We therefore override its
default value that is based on XHCI_RESET_ON_RESUME.
Signed-off-by: Théo Lebrun <theo.lebrun@xxxxxxxxxxx>
---
drivers/usb/cdns3/host.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c
index d2cb529630e4..edef39ab8d15 100644
--- a/drivers/usb/cdns3/host.c
+++ b/drivers/usb/cdns3/host.c
@@ -139,6 +139,15 @@ static void cdns_host_exit(struct cdns *cdns)
cdns_drd_host_off(cdns);
}
+static int cdns_host_resume(struct cdns *cdns, bool lost_power)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(cdns->host_dev);
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+
+ xhci->lost_power = lost_power;
+ return 0;
+}
+
int cdns_host_init(struct cdns *cdns)
{
struct cdns_role_driver *rdrv;
@@ -149,6 +158,7 @@ int cdns_host_init(struct cdns *cdns)
rdrv->start = __cdns_host_init;
rdrv->stop = cdns_host_exit;
+ rdrv->resume = cdns_host_resume;
rdrv->state = CDNS_ROLE_STATE_INACTIVE;
rdrv->name = "host";
--
2.45.2
