df7a86c61
author Abhijeet Joglekar <abjoglek@cisco.com> 1240356412 -0700
committer James Bottomley <James.Bottomley@HansenPartnership.com> 1240845528 -0500

[SCSI] libfc: Hold disc mutex while processing gpn ft resp

gpn_ft_resp processing currently does not hold the discovery lock.
disc_done() thus gets called from gpn_ft_resp or from gpn_ft_parse
without the lock held. This then sets disc->pending to zero or calls
gpn_ft_req() without disc_lock held.

- Hold disc mutex during gpn_ft resp processing
- In disc_done, release the disc mutex while calling lport callback

Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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