[PATCH v4] usb: ehci-hcd: notify phy when connect change

Richard Zhao [off-list ref] writes:

On Wed, Jun 06, 2012 at 12:39:55PM +0300, Alexander Shishkin wrote:

quoted

Richard Zhao [off-list ref] writes:

quoted

It still has below limitations:
- it does not work for multi-phy ehci
- the best place is after debounce, but I can't get
  phy there

Signed-off-by: Richard Zhao <redacted>
---
 drivers/usb/host/ehci-hcd.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index b100f5f..724ac471 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c

@@ -928,6 +928,21 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
 			pstatus = ehci_readl(ehci,
 					 &ehci->regs->port_status[i]);
 
+			/* FIXME:
+			 * - it does not work for multi-phy ehci
+			 * - the best place is after debounce, but I can't get
+			 *   phy there
+			 */
+			if (unlikely(ehci->transceiver &&
+					(pstatus & PORT_CSC))) {

I don't think you need parens around (pstatus & PORT_CSC), since it
should already have higher precedence.

But it's more readable. Isn't it?

I guess it is.

Regards,
--
Alex