diff options
| author | Marcelo Tosatti <marcelo@kvack.org> | 2007-08-21 01:13:27 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 21:55:18 (GMT) |
| commit | af1c51fcb2aea23ec2dfe73b7d66515d1622e689 (patch) | |
| tree | 16117f9e46917e374c0f857d798cb5bcb46f6771 /drivers/usb/host/ehci-pci.c | |
| parent | 0eb0226c9d819fd2af31ae4fc52bbca81c215369 (diff) | |
| download | linux-af1c51fcb2aea23ec2dfe73b7d66515d1622e689.tar.xz | |
USB: EHCI restart speedup
It is not necessary to powerdown the ports on ehci_pci_reinit() when the
chip reset already did that. Removing this saves 20ms during restart
after poweroff paths (which OLPC uses a lot).
To ensure driver startup then behaves consistently, force a reset during
driver startup. (Not doing this was an accident of some previous changes
to the init sequence.)
Make the corresponding change in the PS3 support. It's not clear what
ehci-fsl should do here; it has similar code to the PS3.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: <rvinson@mvista.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci-pci.c')
| -rw-r--r-- | drivers/usb/host/ehci-pci.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index a7816e3..ad0d496 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -58,8 +58,6 @@ static int ehci_pci_reinit(struct ehci_hcd *ehci, struct pci_dev *pdev) if (!retval) ehci_dbg(ehci, "MWI active\n"); - ehci_port_power(ehci, 0); - return 0; } @@ -156,8 +154,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd) break; } - if (ehci_is_TDI(ehci)) - ehci_reset(ehci); + ehci_reset(ehci); /* at least the Genesys GL880S needs fixup here */ temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params); |