Commit b38f4cbd authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by David Sterba

btrfs: remove impossible WARN_ON in btrfs_destroy_dev_replace_tgtdev()

We have a user report, that cppcheck is complaining about a possible
NULL-pointer dereference in btrfs_destroy_dev_replace_tgtdev().

We're first dereferencing the 'tgtdev' variable and the later check for
the validity of the pointer with a WARN_ON(!tgtdev);

But all callers of btrfs_destroy_dev_replace_tgtdev() either explicitly
check if 'tgtdev' is non-NULL or directly allocate 'tgtdev', so the
WARN_ON() is impossible to hit. Just remove it to silence the checker's
complains.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=205003Signed-off-by: default avatarJohannes Thumshirn <jth@kernel.org>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 12969952
......@@ -2132,7 +2132,6 @@ void btrfs_destroy_dev_replace_tgtdev(struct btrfs_device *tgtdev)
{
struct btrfs_fs_devices *fs_devices = tgtdev->fs_info->fs_devices;
WARN_ON(!tgtdev);
mutex_lock(&fs_devices->device_list_mutex);
btrfs_sysfs_rm_device_link(fs_devices, tgtdev);
......
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