tree bb5d45ec9af0dc3cf22d3a21364c13f6ae2e5358
parent dc512814b5f8b7b80c74d6170b93a606ae4f36c5
author James Bottomley <James.Bottomley@HansenPartnership.com> 1199294070 -0600
committer James Bottomley <James.Bottomley@HansenPartnership.com> 1199300880 -0600

[SCSI] scsi_sysfs: restore prep_fn when ULD is removed

A recent bug report:

http://bugzilla.kernel.org/show_bug.cgi?id=9674

Was caused because the ULDs now set their own prep functions, but
don't necessarily reset the prep function back to the SCSI default
when they are removed.  This leads to panics if commands are sent to
the device after the module is removed because the prep_fn is still
pointing to the old module code.  The fix for this is to implement a
bus remove method that resets the prep_fn pointer correctly before
calling the ULD specific driver remove method.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>