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EHCI: fix port reset reporting

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Commit b416191a14 (Fix EHCI port reset.) didn't
move the code that checked for successful clearing of the port reset bit from
ehci_submit_root(), relying on wait_ms() call instead. The mentioned code also
erroneously reported port reset state when the reset was already completed.

Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
This commit is contained in:
Sergei Shtylyov 2010-02-27 21:33:21 +03:00 committed by Remy Bohmer
parent e06a055bcd
commit c8b2d1dc0f
1 changed files with 17 additions and 15 deletions
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32
drivers/usb/host/ehci-hcd.c
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@ -630,19 +630,8 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
if (reg & EHCI_PS_OCA)
tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
if (reg & EHCI_PS_PR &&
(portreset & (1 << le16_to_cpu(req->index)))) {
int ret;
/* force reset to complete */
reg = reg & ~(EHCI_PS_PR | EHCI_PS_CLEAR);
ehci_writel(status_reg, reg);
ret = handshake(status_reg, EHCI_PS_PR, 0, 2 * 1000);
if (!ret)
tmpbuf[0] |= USB_PORT_STAT_RESET;
else
printf("port(%d) reset error\n",
le16_to_cpu(req->index) - 1);
}
if (reg & EHCI_PS_PR)
tmpbuf[0] |= USB_PORT_STAT_RESET;
if (reg & EHCI_PS_PP)
tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
@ -699,6 +688,8 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
ehci_writel(status_reg, reg);
break;
} else {
int ret;
reg |= EHCI_PS_PR;
reg &= ~EHCI_PS_PE;
ehci_writel(status_reg, reg);
@ -710,8 +701,19 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
wait_ms(50);
/* terminate the reset */
ehci_writel(status_reg, reg & ~EHCI_PS_PR);
wait_ms(2);
portreset |= 1 << le16_to_cpu(req->index);
/*
* A host controller must terminate the reset
* and stabilize the state of the port within
* 2 milliseconds
*/
ret = handshake(status_reg, EHCI_PS_PR, 0,
2 * 1000);
if (!ret)
portreset |=
1 << le16_to_cpu(req->index);
else
printf("port(%d) reset error\n",
le16_to_cpu(req->index) - 1);
}
break;
default: