diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2011-08-19 00:31:30 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-23 02:57:01 +0400 |
| commit | e8799906045302776b35b66b16495c575db3b69c (patch) | |
| tree | e6b5a76bd13ef0a9df24f7a7c8c1e924c0efcedb /drivers/usb/host/ehci-hub.c | |
| parent | dfd8c81fd1c09c740140a2334669994d5c6edcaa (diff) | |
| download | linux-e8799906045302776b35b66b16495c575db3b69c.tar.xz | |
USB: EHCI: remove usages of hcd->state
This patch (as1483) improves the ehci-hcd driver family by getting rid
of the reliance on the hcd->state variable. It has no clear owner and
it isn't protected by the usual HCD locks. In its place, the patch
adds a new, private ehci->rh_state field to record the state of the
root hub.
Along the way, the patch removes a couple of lines containing
redundant assignments to the state variable. Also, the QUIESCING
state simply gets changed to the RUNNING state, because the driver
doesn't make any distinction between them.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci-hub.c')
| -rw-r--r-- | drivers/usb/host/ehci-hub.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index e051b30c1847..c6104c4f1f38 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -236,10 +236,8 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) } /* stop schedules, clean any completed work */ - if (HC_IS_RUNNING(hcd->state)) { + if (ehci->rh_state == EHCI_RH_RUNNING) ehci_quiesce (ehci); - hcd->state = HC_STATE_QUIESCING; - } ehci->command = ehci_readl(ehci, &ehci->regs->command); ehci_work(ehci); @@ -313,7 +311,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) /* turn off now-idle HC */ ehci_halt (ehci); - hcd->state = HC_STATE_SUSPENDED; + ehci->rh_state = EHCI_RH_SUSPENDED; if (ehci->reclaim) end_unlink_async(ehci); @@ -382,6 +380,7 @@ static int ehci_bus_resume (struct usb_hcd *hcd) /* restore CMD_RUN, framelist size, and irq threshold */ ehci_writel(ehci, ehci->command, &ehci->regs->command); + ehci->rh_state = EHCI_RH_RUNNING; /* Some controller/firmware combinations need a delay during which * they set up the port statuses. See Bugzilla #8190. */ @@ -452,7 +451,6 @@ static int ehci_bus_resume (struct usb_hcd *hcd) } ehci->next_statechange = jiffies + msecs_to_jiffies(5); - hcd->state = HC_STATE_RUNNING; /* Now we can safely re-enable irqs */ ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable); @@ -564,7 +562,7 @@ ehci_hub_status_data (struct usb_hcd *hcd, char *buf) u32 ppcd = 0; /* if !USB_SUSPEND, root hub timers won't get shut down ... */ - if (!HC_IS_RUNNING(hcd->state)) + if (ehci->rh_state != EHCI_RH_RUNNING) return 0; /* init status to no-changes */ |