On 11/9/2012 12:53 AM, Sergei Shtylyov wrote:
Look at this fragment of ehci-hub.c:
Thanks Sergei for pointing it out.
I apologize for the noise. SPEAr is also an EHCI implementation. Having
following code, actually we should not need this patch for SPEAr.
Regards
Pratyush
807 if ((temp & PORT_OCC) && !ignore_oc){
808 status |= USB_PORT_STAT_C_OVERCURRENT << 16;
809
810 /*
811 * Hubs should disable port power on over-current.
812 * However, not all EHCI implementations do this
813 * automatically, even if they_do_ support per-port
814 * power switching; they're allowed to just limit
the
815 * current. khubd will turn the power back on.
816 */
817 if ((temp & PORT_OC) && HCS_PPC(ehci->hcs_params)) {
818 ehci_writel(ehci,
819 temp & ~(PORT_RWC_BITS |
PORT_POWER),
820 status_reg);
821 temp = ehci_readl(ehci, status_reg);
822 }
823 }
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