diff options
| author | Aaron Ma <aaron.ma@canonical.com> | 2018-11-09 18:21:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-01 11:37:25 +0300 |
| commit | cad3876cd23d63e818c3112e885767a09b249905 (patch) | |
| tree | 358c311cf105fb2f1ff448c1c2d16cfd3f3c02c8 /drivers/usb/host | |
| parent | 60ac01c60ba94d8a17016ede99789207a5b93856 (diff) | |
| download | linux-cad3876cd23d63e818c3112e885767a09b249905.tar.xz | |
usb: xhci: fix timeout for transition from RExit to U0
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>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-hub.c | 4 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 60e4ac7ae4f8..da98a11244e2 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -921,7 +921,7 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, 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) { @@ -935,7 +935,7 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, } else { int port_status = readl(port->addr); 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); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 6230a578324c..237877042262 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1678,7 +1678,7 @@ 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) { |