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authorSreekanth Reddy <Sreekanth.Reddy@lsi.com>2013-07-25 11:32:51 +0530
committerJames Bottomley <JBottomley@Parallels.com>2013-09-03 07:27:52 -0700
commit63e359d42119d803912e5f24dc1c56d168acedeb (patch)
treead02de29e3ed8f45235dfc5df2da298207b3bc0f /drivers/scsi/pmcraid.h
parentbc6d4c3b78d1320606f99905e2a9fa86b246b449 (diff)
[SCSI] mpt2sas: Fix for kernel panic when driver loads with HBA connected to non LUN 0 configured expander
With some enclosures when LUN 0 is not created but LUN 1 or LUN X is created then SCSI scan procedure calls target_alloc, slave_alloc call back functions for LUN 0 and slave_destory() for same LUN 0. In these kind of cases within slave_destroy, pointer to scsi_target in _sas_device structure is set to NULL, following which when slave_alloc for LUN 1 is called then starget would not be set properly for this LUN. So, scsi_target pointer pointing to NULL value would lead to a crash later in the discovery procedure. To solve this issue set the sas_device's scsi_target pointer to scsi_device's scsi_target if it is NULL earlier in slave_alloc callback function. Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/pmcraid.h')
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