intel_th: msu: Set fops::owner to prevent module from unloading

Right now it's possible to unload the msu driver while its character
device is open. Prevent it by setting fops::owner, which will result
in the module reference being held while the device node is open.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Laurent Fert <laurent.fert@intel.com>

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index ee153067e13636178c88443127cfbb7682551779..bcc3b471337746440e8ad2a7fc58d909a4446e70 100644 (file)
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1253,6 +1253,7 @@ static const struct file_operations intel_th_msc_fops = {
        .read           = intel_th_msc_read,
        .mmap           = intel_th_msc_mmap,
        .llseek         = no_llseek,
+       .owner          = THIS_MODULE,
 };
 
 static int intel_th_msc_init(struct msc *msc)