btrfs: fix warning on PTR_ERR() against NULL device at btrfs_control_ioctl()

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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>

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Filipe Manana 2024-11-06 12:14:09 +00:00 • committed by David Sterba

parent 80b3695538

commit 2342d6595b

1 changed files with 4 additions and 1 deletions

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fs/btrfs/super.c

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