4.4-stable review patch. If anyone has any objections, please let me know.
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From: Aaron Ma aaron.ma@canonical.com
commit a5baeaeabcca3244782a9b6382ebab6f8a58f583 upstream.
This definition is used by msecs_to_jiffies in milliseconds. According to the comments, max rexit timeout should be 20ms. Align with the comments to properly calculate the delay.
Verified on Sunrise Point-LP and Cannon Lake.
Cc: stable@vger.kernel.org Signed-off-by: Aaron Ma aaron.ma@canonical.com Signed-off-by: Mathias Nyman mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/host/xhci-hub.c | 4 ++-- drivers/usb/host/xhci.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -790,7 +790,7 @@ static u32 xhci_get_port_status(struct u time_left = wait_for_completion_timeout( &bus_state->rexit_done[wIndex], msecs_to_jiffies( - XHCI_MAX_REXIT_TIMEOUT)); + XHCI_MAX_REXIT_TIMEOUT_MS)); spin_lock_irqsave(&xhci->lock, flags);
if (time_left) { @@ -804,7 +804,7 @@ static u32 xhci_get_port_status(struct u } else { int port_status = readl(port_array[wIndex]); xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n", - XHCI_MAX_REXIT_TIMEOUT, + XHCI_MAX_REXIT_TIMEOUT_MS, port_status); status |= USB_PORT_STAT_SUSPEND; clear_bit(wIndex, &bus_state->rexit_ports); --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1490,7 +1490,7 @@ struct xhci_bus_state { * It can take up to 20 ms to transition from RExit to U0 on the * Intel Lynx Point LP xHCI host. */ -#define XHCI_MAX_REXIT_TIMEOUT (20 * 1000) +#define XHCI_MAX_REXIT_TIMEOUT_MS 20
static inline unsigned int hcd_index(struct usb_hcd *hcd) {