Thread (1 message) 1 message, 1 author, 2020-02-14
STALE2387d LANDED

Landed in mainline as dce174e01d86 on 2020-02-17.

[PATCH 22/30] xhci: Add missing annotation for xhci_set_port_power()

From: Jules Irenge <hidden>
Date: 2020-02-14 20:50:04
Also in: lkml
Subsystem: the rest, usb subsystem, usb xhci driver · Maintainers: Linus Torvalds, Greg Kroah-Hartman, Mathias Nyman

Sparse reports a warning at xhci_set_port_power()

warning: context imbalance in xhci_set_port_power - unexpected unlock

The root cause is the missing annotation at xhci_set_port_power()
Add the missing __must_hold(&xhci->lock) annotattion

Signed-off-by: Jules Irenge <redacted>
---
 drivers/usb/host/xhci-hub.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 7a3a29e5e9d2..57e3f2c5475a 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -558,6 +558,7 @@ struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd)
  */
 static void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd,
 				u16 index, bool on, unsigned long *flags)
+	__must_hold(&xhci->lock)
 {
 	struct xhci_hub *rhub;
 	struct xhci_port *port;
-- 
2.24.1
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