diff options
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/host/xhci-pci.c | 1 | ||||
-rw-r--r-- | drivers/usb/host/xhci-ring.c | 3 | ||||
-rw-r--r-- | drivers/usb/host/xhci.c | 8 | ||||
-rw-r--r-- | drivers/usb/host/xhci.h | 1 |
4 files changed, 9 insertions, 4 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9672344afded..c6027acb6263 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -298,6 +298,7 @@ static void xhci_pci_remove(struct pci_dev *dev) struct xhci_hcd *xhci; xhci = hcd_to_xhci(pci_get_drvdata(dev)); + xhci->xhc_state |= XHCI_STATE_REMOVING; if (xhci->shared_hcd) { usb_remove_hcd(xhci->shared_hcd); usb_put_hcd(xhci->shared_hcd); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 2e437d61f7dd..6fe0377ec5cf 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -3824,7 +3824,8 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd, int reserved_trbs = xhci->cmd_ring_reserved_trbs; int ret; - if (xhci->xhc_state) { + if ((xhci->xhc_state & XHCI_STATE_DYING) || + (xhci->xhc_state & XHCI_STATE_HALTED)) { xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n"); return -ESHUTDOWN; } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 15c72762909d..896b928f7412 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -146,7 +146,8 @@ static int xhci_start(struct xhci_hcd *xhci) "waited %u microseconds.\n", XHCI_MAX_HALT_USEC); if (!ret) - xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING); + /* clear state flags. Including dying, halted or removing */ + xhci->xhc_state = 0; return ret; } @@ -2763,7 +2764,8 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) if (ret <= 0) return ret; xhci = hcd_to_xhci(hcd); - if (xhci->xhc_state & XHCI_STATE_DYING) + if ((xhci->xhc_state & XHCI_STATE_DYING) || + (xhci->xhc_state & XHCI_STATE_REMOVING)) return -ENODEV; xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev); @@ -3812,7 +3814,7 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev, mutex_lock(&xhci->mutex); - if (xhci->xhc_state) /* dying or halted */ + if (xhci->xhc_state) /* dying, removing or halted */ goto out; if (!udev->slot_id) { diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index f1546ee3059f..c5d6963e9cbe 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1536,6 +1536,7 @@ struct xhci_hcd { */ #define XHCI_STATE_DYING (1 << 0) #define XHCI_STATE_HALTED (1 << 1) +#define XHCI_STATE_REMOVING (1 << 2) /* Statistics */ int error_bitmask; unsigned int quirks; |