Don't disable port before resetting. Also perform reset unconditionally
when requested.
Signed-off-by: Aaro Koskinen <aaro.koski...@iki.fi>
---
drivers/staging/octeon-usb/octeon-hcd.c | 28 +++-------------------------
1 file changed, 3 insertions(+), 25 deletions(-)
diff --git a/drivers/staging/octeon-usb/octeon-hcd.c
b/drivers/staging/octeon-usb/octeon-hcd.c
index 21edce0..257431f 100644
--- a/drivers/staging/octeon-usb/octeon-hcd.c
+++ b/drivers/staging/octeon-usb/octeon-hcd.c
@@ -958,29 +958,16 @@ static int cvmx_usb_shutdown(struct cvmx_usb_state *usb)
/**
- * Enable a USB port. After this call succeeds, the USB port is
+ * Reset a USB port. After this call succeeds, the USB port is
* online and servicing requests.
*
* @usb: USB device state populated by cvmx_usb_initialize().
- *
- * Returns: 0 or a negative error code.
*/
-static int cvmx_usb_enable(struct cvmx_usb_state *usb)
+static void cvmx_usb_reset_port(struct cvmx_usb_state *usb)
{
usb->usbcx_hprt.u32 = cvmx_usb_read_csr32(usb,
CVMX_USBCX_HPRT(usb->index));
- /*
- * If the port is already enabled the just return. We don't need to do
- * anything
- */
- if (usb->usbcx_hprt.s.prtena)
- return 0;
-
- /* If there is nothing plugged into the port then fail immediately */
- if (!usb->usbcx_hprt.s.prtconnsts)
- return -ETIMEDOUT;
-
/* Program the port reset bit to start the reset process */
USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index), union cvmx_usbcx_hprt,
prtrst, 1);
@@ -995,19 +982,12 @@ static int cvmx_usb_enable(struct cvmx_usb_state *usb)
USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index), union cvmx_usbcx_hprt,
prtrst, 0);
- /* Wait for the USBC_HPRT[PRTENA]. */
- if (CVMX_WAIT_FOR_FIELD32(CVMX_USBCX_HPRT(usb->index),
- union cvmx_usbcx_hprt, prtena, ==, 1, 100000))
- return -ETIMEDOUT;
-
/*
* Read the port speed field to get the enumerated speed,
* USBC_HPRT[PRTSPD].
*/
usb->usbcx_hprt.u32 = cvmx_usb_read_csr32(usb,
CVMX_USBCX_HPRT(usb->index));
-
- return 0;
}
@@ -3536,9 +3516,7 @@ static int octeon_usb_hub_control(struct usb_hcd *hcd,
u16 typeReq, u16 wValue,
case USB_PORT_FEAT_RESET:
dev_dbg(dev, " RESET\n");
spin_lock_irqsave(&priv->lock, flags);
- cvmx_usb_disable(&priv->usb);
- if (cvmx_usb_enable(&priv->usb))
- dev_dbg(dev, "Failed to enable the port\n");
+ cvmx_usb_reset_port(&priv->usb);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
case USB_PORT_FEAT_INDICATOR:
--
2.2.0
_______________________________________________
devel mailing list
de...@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
