torvalds/linux
3
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-02 04:37:44 +08:00
Code Issues Packages Projects Releases Wiki Activity

platform/x86: ISST: Reset default callback on unregister

Browse Source 
When multiple clients are registered and some of those modules are
removed, the default IOCTL callback for those clients are still not
NULL. Calling them will result in crash.

Set the default IOCTL callback pointer to NULL on unregister.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20230612224033.2382527-2-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Srinivas Pandruvada
2023-06-12 15:40:32 -07:00
committed by Hans de Goede
parent aeaee158c2
commit fa5e68b1c1
1 changed files with 1 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/platform/x86/intel/speed_select_if/isst_if_common.c
View File

@@ -831,6 +831,7 @@ void isst_if_cdev_unregister(int device_type)
{
isst_misc_unreg();
mutex_lock(&punit_misc_dev_open_lock);
punit_callbacks[device_type].def_ioctl = NULL;
punit_callbacks[device_type].registered = 0;
if (device_type == ISST_IF_DEV_MBOX)
isst_delete_hash();