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| author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2018-05-09 12:00:19 -0700 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2018-05-09 12:00:19 -0700 |
| commit | cc1c8445eba5b78f5b719c47572473d7a7caa038 (patch) | |
| tree | 3954bcaa641ee362bf06b7aa9197d30a90eb4ca3 /drivers/usb/host/xhci-dbgtty.c | |
| parent | ab460a2e72dabecfdabd45eb7e3ee2d73fc876d4 (diff) | |
| parent | 75bc37fefc4471e718ba8e651aa74673d4e0a9eb (diff) | |
| download | linux-rt-cc1c8445eba5b78f5b719c47572473d7a7caa038.tar.gz | |
Merge tag 'v4.17-rc4' into rpmsg-next
Pick up fixes from rproc-v4.17-1
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/usb/host/xhci-dbgtty.c')
| -rw-r--r-- | drivers/usb/host/xhci-dbgtty.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index 48779c44c361..eb494ec547e8 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -320,9 +320,11 @@ int xhci_dbc_tty_register_driver(struct xhci_hcd *xhci) void xhci_dbc_tty_unregister_driver(void) { - tty_unregister_driver(dbc_tty_driver); - put_tty_driver(dbc_tty_driver); - dbc_tty_driver = NULL; + if (dbc_tty_driver) { + tty_unregister_driver(dbc_tty_driver); + put_tty_driver(dbc_tty_driver); + dbc_tty_driver = NULL; + } } static void dbc_rx_push(unsigned long _port) |