Contents

kIOUSBCRCErr

Declaration

#define kIOUSBCRCErr

Discussion

These errors are returned by the OHCI controller. The # in parenthesis (xx) corresponds to the OHCI Completion Code. For the following Completion codes, we return a generic IOKit error instead of a USB specific error. 

 
Completion Code         Error Returned              Description
9                       kIOReturnUnderrun           (Data Underrun) EP returned less data than max packet size
8                       kIOReturnOverrun            (Data Overrun) Packet too large or more data than buffer
5                       kIOReturnNotResponding      Device Not responding
4                       kIOUSBPipeStalled           Endpoint returned a STALL PID