From: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
We would like to allow host controller drivers to stop using hcd->state.
Unfortunately, some host controller drivers use hcd->state as an
implicit way of telling the core that a controller has died. The
roothub registration functions must assume the host died if hcd->state
equals HC_STATE_HALT.
To facilitate drivers that don't want to set hcd->state to
HC_STATE_RUNNING in their initialization routines, we set the state to
running before calling the host controller's start function.
Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
---
drivers/usb/core/hcd.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index b70db6e..a97ed6d 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2347,6 +2347,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
(unsigned long long)hcd->rsrc_start);
}
+ hcd->state = HC_STATE_RUNNING;
retval = hcd->driver->start(hcd);
if (retval < 0) {
dev_err(hcd->self.controller, "startup error %d\n", retval);
--
1.7.4.1
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