PROBLEM: (749B23467/QAR 52293) (Patch ID: OSF375-350367) ******** This patch is an upgrade/replacement for the "FTA" FDDI driver and fixes a DMA Error which can occur with the older driver. If it became necessary to back out a partially constructed frame from the transmit queue, the older driver was unable to properly backed out the frame before restarting. This resulted in the following errors being logged to the /var/adm/messages file: vmunix: fta0: Halted. vmunix: fta0: Halt Reason: DMA Error vmunix: fta0: Link Unavailable. vmunix: fta0: Link Available. PROBLEM: (ZUO101163) (Patch ID: OSF375-350419) ******** After a hang the system crashes with the panic: apecs_read_io_port. At that time, the only way to reboot the system is to switch it OFF then ON. PROBLEM: (MGO103292) (Patch ID: OSF375-131) ******** This patch fixes a kernel memory fault caused by the fta FDDI driver. The stack trace looks like this: panic trap _XentMM prf printf fta_poll_cmd_req ftaioctl ifioctl soo_ioctl ioctl_base ioctl syscall _Xsyscall