While testing the "sata_fsl" driver with a Sil3726 based PMP, we had a specific configuration where the host port to PMP link speed was 1.5Gbps, while the PMP has configured it's device port(s) link speed to 3Gbps. This configuration causes NCQ hangs on certain Seagate drives, probably because of the link speed difference between host and PMP device & PMP device ports and drives. Does it makes sense to limit the PMP device port link speeds to the host port link speed ? I believe currently sata_pmp_attach() is calling sata_link_init_spd() for each PMP device port and thus causing PMP device port link speeds being configured independent of host port link speed. Probably the PMP device port links should be limited to the host link speed. Thanks, Ashish Kalra. Freescale Semiconductor. - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
