Periodic schedules tracks how many int_queue-s are active, and decides whether or not to en/disable the periodic schedule based on this. This is clearly a per controller thing.
Signed-off-by: Hans de Goede hdegoede@redhat.com --- drivers/usb/host/ehci-hcd.c | 9 ++++----- drivers/usb/host/ehci.h | 1 + 2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 635a3b4..6323c50 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -996,6 +996,7 @@ int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) * Set up periodic list * Step 1: Parent QH for all periodic transfers. */ + ehcic[index].periodic_schedules = 0; periodic = &ehcic[index].periodic_queue; memset(periodic, 0, sizeof(*periodic)); periodic->qh_link = cpu_to_hc32(QH_LINK_TERMINATE); @@ -1154,8 +1155,6 @@ disable_periodic(struct ehci_ctrl *ctrl) return 0; }
-static int periodic_schedules; - struct int_queue * create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize, int elementsize, void *buffer) @@ -1278,7 +1277,7 @@ create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize, debug("FATAL: periodic should never fail, but did"); goto fail3; } - periodic_schedules++; + ctrl->periodic_schedules++;
debug("Exit create_int_queue\n"); return result; @@ -1335,7 +1334,7 @@ destroy_int_queue(struct usb_device *dev, struct int_queue *queue) debug("FATAL: periodic should never fail, but did"); goto out; } - periodic_schedules--; + ctrl->periodic_schedules--;
struct QH *cur = &ctrl->periodic_queue; timeout = get_timer(0) + 500; /* abort after 500ms */ @@ -1357,7 +1356,7 @@ destroy_int_queue(struct usb_device *dev, struct int_queue *queue) } }
- if (periodic_schedules > 0) { + if (ctrl->periodic_schedules > 0) { result = enable_periodic(ctrl); if (result < 0) debug("FATAL: periodic should never fail, but did"); diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 093eb4b..433e703 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -246,6 +246,7 @@ struct ehci_ctrl { struct QH qh_list __aligned(USB_DMA_MINALIGN); struct QH periodic_queue __aligned(USB_DMA_MINALIGN); uint32_t *periodic_list; + int periodic_schedules; int ntds; };