From: Manoj Iyer <manoj.iyer@xxxxxxxxxxxxx> On Intel Panther Point chipset USB 3.0 devices show up as high-speed devices on powerup, but after an s3 cycle they are correctly recognized as SuperSpeed. At powerup switch the port to xHCI so that USB 3.0 devices are correctly recognized. This is a second attempt at fixing this based on review comments to my earlier patch from Andiry Xu BugLink: http://bugs.launchpad.net/bugs/1000424 Test results after applying patch ================================== USB 3.0 device connected to SuperSpeed port -------------------------------------------- [ 34.694033] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd [ 34.712925] scsi6 : usb-storage 4-1:1.0 [ 35.709947] scsi 6:0:0:0: Direct-Access JetFlash Transcend 16GB 1.00 PQ: 0 ANSI: 5 [ 35.710886] sd 6:0:0:0: Attached scsi generic sg3 type 0 [ 35.711475] sd 6:0:0:0: [sdc] 30871552 512-byte logical blocks: (15.8 GB/14.7 GiB) [ 35.712721] sd 6:0:0:0: [sdc] Write Protect is off [ 35.712725] sd 6:0:0:0: [sdc] Mode Sense: 23 00 00 00 [ 35.712841] sd 6:0:0:0: [sdc] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA [ 35.714627] sdc: sdc1 USB 3.0 device connected to highspeed port ------------------------------------------- [ 148.128616] usb 1-1.2: new high-speed USB device number 5 using ehci_hcd [ 148.226040] scsi7 : usb-storage 1-1.2:1.0 [ 149.225645] scsi 7:0:0:0: Direct-Access JetFlash Transcend 16GB 1.00 PQ: 0 ANSI: 5 [ 149.227690] sd 7:0:0:0: Attached scsi generic sg3 type 0 [ 149.230196] sd 7:0:0:0: [sdc] 30871552 512-byte logical blocks: (15.8 GB/14.7 GiB) [ 149.230555] sd 7:0:0:0: [sdc] Write Protect is off [ 149.230563] sd 7:0:0:0: [sdc] Mode Sense: 23 00 00 00 [ 149.231333] sd 7:0:0:0: [sdc] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA [ 149.235822] sdc: sdc1 [ 149.238035] sd 7:0:0:0: [sdc] Attached SCSI removable disk Manoj Iyer (1): xhci: Recognize USB 3.0 devices as superspeed at powerup drivers/usb/host/pci-quirks.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
