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| author | Alan Stern <stern@rowland.harvard.edu> | 2013-08-02 01:09:23 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-02 01:37:07 +0400 |
| commit | 3a20446f02bfb71d68ae9ec673268bb7823f878c (patch) | |
| tree | 410c70a681b1e3eaee9632f0f161c7f6113cd1f3 /drivers | |
| parent | b8bdad608213caffa081a97d2e937e5fe08c4046 (diff) | |
| download | linux-3a20446f02bfb71d68ae9ec673268bb7823f878c.tar.xz | |
USB: EHCI: keep better track of resuming ports
The ehci-hcd driver isn't as careful as it should be about the way it
uses ehci->resuming_ports. One of the omissions was fixed recently by
commit 47a64a13d54 (USB: EHCI: Fix resume signalling on remote
wakeup), but there are other places that need attention:
When a port's suspend feature is explicitly cleared, the
corresponding bit in resuming_ports should be set and the core
should be notified about the port resume.
We don't need to clear a resuming_ports bit when a reset
completes.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ehci-hub.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 6dce37555c4f..6d0e59306ed9 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -801,6 +801,8 @@ static int ehci_hub_control ( ehci_writel(ehci, temp | PORT_RESUME, status_reg); ehci->reset_done[wIndex] = jiffies + msecs_to_jiffies(20); + set_bit(wIndex, &ehci->resuming_ports); + usb_hcd_start_port_resume(&hcd->self, wIndex); break; case USB_PORT_FEAT_C_SUSPEND: clear_bit(wIndex, &ehci->port_c_suspend); @@ -911,7 +913,6 @@ static int ehci_hub_control ( ehci->reset_done[wIndex])) { status |= USB_PORT_STAT_C_RESET << 16; ehci->reset_done [wIndex] = 0; - clear_bit(wIndex, &ehci->resuming_ports); /* force reset to complete */ ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET), |