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btrfs: fix warning on PTR_ERR() against NULL device at btrfs_control_ioctl()
authorFilipe Manana <fdmanana@suse.com>
Wed, 6 Nov 2024 12:14:09 +0000 (12:14 +0000)
committerDavid Sterba <dsterba@suse.com>
Mon, 11 Nov 2024 13:34:22 +0000 (14:34 +0100)
commit2342d6595b608eec94187a17dc112dd4c2a812fa
treefc6e8d3d6ec113a06cd914c55162efd1dd74fbd1tree
parent80b3695538275e1b2c9a572615175643454b2cb3commit | diff
btrfs: fix warning on PTR_ERR() against NULL device at btrfs_control_ioctl()

Smatch complains about calling PTR_ERR() against a NULL pointer:

  fs/btrfs/super.c:2272 btrfs_control_ioctl() warn: passing zero to 'PTR_ERR'

Fix this by calling PTR_ERR() against the device pointer only if it
contains an error.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/super.c diff | blob | history
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