diff options
| author | Peter Chen <peter.chen@freescale.com> | 2010-10-18 11:45:19 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2010-10-18 13:23:04 +0800 |
| commit | 021d31454b7cebff5645702f88bb1834e0441c5a (patch) | |
| tree | 3a990bbef05a839c64d0d9dbca51e0e4d0fc30b7 | |
| parent | fcdb748cea254c18e3ca85d4a1d3a2254dda6704 (diff) | |
ENGR00132536 usb-host: Clock should be opened before calling ehci_shutdown
When trigger "reboot" command, the driver will call xxx_shutdown.
For usb-host, it will write registers. So, it needs to open
clock before ehci_shutdown if the usb is in low power mode.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
| -rw-r--r-- | drivers/usb/host/ehci-arc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-arc.c b/drivers/usb/host/ehci-arc.c index 60e11b913e63..3ee0dc4d1a31 100644 --- a/drivers/usb/host/ehci-arc.c +++ b/drivers/usb/host/ehci-arc.c @@ -439,6 +439,18 @@ static int ehci_fsl_bus_resume(struct usb_hcd *hcd) return ret; } +static void ehci_fsl_shutdown(struct usb_hcd *hcd) +{ + if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + fsl_usb_clk_gate(hcd->self.controller->platform_data, true); + } + ehci_shutdown(hcd); + if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + fsl_usb_clk_gate(hcd->self.controller->platform_data, false); + } +} /* called during probe() after chip reset completes */ static int ehci_fsl_setup(struct usb_hcd *hcd) @@ -492,7 +504,7 @@ static const struct hc_driver ehci_fsl_hc_driver = { .reset = ehci_fsl_setup, .start = ehci_run, .stop = ehci_stop, - .shutdown = ehci_shutdown, + .shutdown = ehci_fsl_shutdown, /* * managing i/o requests and associated device resources |