[PATCH v3 0/5] usb: xhci: Handle USB transaction error on address command
Xhci driver handles USB transaction errors on transfer events, but transaction errors are possible on address device command completion events as well. The xHCI specification (section 4.6.5) says: A USB Transaction Error Completion Code for an Address Device Command may be due to a Stall response from a device. Software should issue a Disable Slot Command for the Device Slot then an Enable Slot Command to recover from this error. The related discussion threads can be found through below links. http://marc.info/?l=linux-usb=149362010728921=2 http://marc.info/?l=linux-usb=149252752825755=2 This patch set includes some fixes in xhci_disable_slot() as well which will be used to handle USB transaction error on address command. --- Change log: v1->v2: - Add 4 fixes in xhci_disable_slot which will be used to handle USB transaction error on address command. v2->v3: - Add checking virt dev for test mode in PATCH 1/5. Lu Baolu (5): usb: xhci: Disable slot even virt-dev is null usb: xhci: Fix potential memory leak in xhci_disable_slot() usb: xhci: Fix memory leak when xhci_disable_slot() returns error usb: xhci: Return error when host is dead in xhci_disable_slot() usb: xhci: Handle USB transaction error on address command drivers/usb/host/xhci-hub.c | 5 - drivers/usb/host/xhci.c | 52 ++--- drivers/usb/host/xhci.h | 3 +-- 3 files changed, 26 insertions(+), 34 deletions(-) -- 2.7.4
[PATCH v3 0/5] usb: xhci: Handle USB transaction error on address command
Xhci driver handles USB transaction errors on transfer events, but transaction errors are possible on address device command completion events as well. The xHCI specification (section 4.6.5) says: A USB Transaction Error Completion Code for an Address Device Command may be due to a Stall response from a device. Software should issue a Disable Slot Command for the Device Slot then an Enable Slot Command to recover from this error. The related discussion threads can be found through below links. http://marc.info/?l=linux-usb=149362010728921=2 http://marc.info/?l=linux-usb=149252752825755=2 This patch set includes some fixes in xhci_disable_slot() as well which will be used to handle USB transaction error on address command. --- Change log: v1->v2: - Add 4 fixes in xhci_disable_slot which will be used to handle USB transaction error on address command. v2->v3: - Add checking virt dev for test mode in PATCH 1/5. Lu Baolu (5): usb: xhci: Disable slot even virt-dev is null usb: xhci: Fix potential memory leak in xhci_disable_slot() usb: xhci: Fix memory leak when xhci_disable_slot() returns error usb: xhci: Return error when host is dead in xhci_disable_slot() usb: xhci: Handle USB transaction error on address command drivers/usb/host/xhci-hub.c | 5 - drivers/usb/host/xhci.c | 52 ++--- drivers/usb/host/xhci.h | 3 +-- 3 files changed, 26 insertions(+), 34 deletions(-) -- 2.7.4
