diff options
author | James Smart <James.Smart@Emulex.Com> | 2008-08-07 20:49:30 -0400 |
---|---|---|
committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-10-03 11:46:12 -0500 |
commit | 315cb0ad124575e75da2d0e0a95990587fc23485 (patch) | |
tree | 1efbc6b9b744163bb542ea3eec87bdb4786b598a /block/blk-map.c | |
parent | 6f92a6a7ddba5ae7ca0f0255d46410465dcf2ba6 (diff) |
[SCSI] scsi_host_lookup: error returns and NULL pointers
This patch cleans up the behavior of scsi_host_lookup().
The original implementation attempted to use the dual role of
either returning a pointer value, or a negative error code.
User's needed to use IS_ERR() to check the result. Additionally,
the IS_ERR() macro never checks for when a NULL pointer was
returned, so a NULL pointer actually passes with a success case.
Note: scsi_host_get(), used by scsi_host_lookup(), can return
a NULL pointer.
Talk about a mudhole for the unitiated to step into....
This patch converts scsi_host_lookup() to return either NULL
or a valid pointer. The consumers were updated for the change.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'block/blk-map.c')
0 files changed, 0 insertions, 0 deletions