From: Marcelo Tosatti Date: Tue, 21 Aug 2007 01:13:27 +0000 (-0700) Subject: USB: EHCI restart speedup X-Git-Tag: v2.6.24-rc1~1395^2~72 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=af1c51fcb2aea23ec2dfe73b7d66515d1622e689;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: David Brownell Cc: Acked-by: Geoff Levand Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index a7816e392a8..ad0d4965f2f 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); diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c index 829fe649a98..03a6b2f4e6e 100644 --- a/drivers/usb/host/ehci-ps3.c +++ b/drivers/usb/host/ehci-ps3.c @@ -47,7 +47,7 @@ static int ps3_ehci_hc_reset(struct usb_hcd *hcd) if (result) return result; - ehci_port_power(ehci, 0); + ehci_reset(ehci); return result; }