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usb: Correct CLEAR_FEATURE code in ehci-hcd 

This commit broke USB2 on link (Chromebook Pixel):

  020bbcb usb: hub: Power-cycle on root-hub ports

However the root cause seems to be a missing mask and missing 'break'
in ehci-hcd.c. This patch fixes both.

On link, 'usb start' with a USB keyboard and memory stick inserted now
finds both. The keyboard works as expected. Also ext2ls shows a directory
listing from the memory stick.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2013-05-10 19:49:00 -07:00 committed by Marek Vasut
parent 5da2dc9789
commit ed10e66aba
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/usb/host/ehci-hcd.c
View File

@ -809,21 +809,23 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
break;
case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
reg = ehci_readl(status_reg);
reg &= ~EHCI_PS_CLEAR;
switch (le16_to_cpu(req->value)) {
case USB_PORT_FEAT_ENABLE:
reg &= ~EHCI_PS_PE;
break;
case USB_PORT_FEAT_C_ENABLE:
reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_PE;
reg |= EHCI_PS_PE;
break;
case USB_PORT_FEAT_POWER:
if (HCS_PPC(ehci_readl(&ctrl->hccr->cr_hcsparams)))
reg = reg & ~(EHCI_PS_CLEAR | EHCI_PS_PP);
reg &= ~EHCI_PS_PP;
break;
case USB_PORT_FEAT_C_CONNECTION:
reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_CSC;
reg |= EHCI_PS_CSC;
break;
case USB_PORT_FEAT_OVER_CURRENT:
reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_OCC;
reg |= EHCI_PS_OCC;
break;
case USB_PORT_FEAT_C_RESET:
ctrl->portreset &= ~(1 << port);