mshv_vtl: initialize poll file mutex before device registration

mshv_vtl_init() registers /dev/mshv before initializing the poll file
mutex. A concurrent MSHV_SET_POLL_FILE ioctl can therefore attempt to lock
an uninitialized mutex while module initialization is still in progress.

Initialize the file-scope mutex statically so it is ready before the misc
device becomes visible.

Fixes: 7bfe3b8ea6e3 ("Drivers: hv: Introduce mshv_vtl driver")
Signed-off-by: Jiale Yao <yaojiale02@163.com>
Reviewed-by: Naman Jain <namjain@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>

0 files changed, 0 insertions, 0 deletions