Hi,
On Wed, Dec 15, 2010 at 04:44:13PM +0530, Pavankumar Kondeti wrote:
Introduce start_hnp callback function for HCD to receive notification
from EHCI core that HNP enabled port is suspended. HCD may initiate
HNP or notify the same to OTG via otg_start_hnp().
This patch is inspired by "USB: Hook start_hnp into ohci struct"
(e8b24450).
Change-Id: I8e258a6fdf42c166ea9cb3a727e4d3d28a8adc72
Signed-off-by: Pavankumar Kondeti <pkondeti@xxxxxxxxxxxxxx>
---
drivers/usb/host/ehci-hub.c | 11 +++++++++++
drivers/usb/host/ehci.h | 2 ++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 796ea0c..65bf104 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -1018,6 +1018,17 @@ static int ehci_hub_control (
|| (temp & PORT_RESET) != 0)
goto error;
+#ifdef CONFIG_USB_OTG
+ if (hcd->self.otg_port == (wIndex + 1) &&
+ hcd->self.b_hnp_enable &&
+ ehci->start_hnp) {
+ ehci_writel(ehci, temp | PORT_SUSPEND,
+ status_reg);
+ set_bit(wIndex, &ehci->suspended_ports);
+ ehci->start_hnp(ehci);
should you check if this pointer is valid before ?
--
balbi
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