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authorJames Smart <James.Smart@Emulex.Com>2006-03-07 15:04:13 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-03-12 08:56:58 -0600
commit9290831f00879d4a66d3bffb609949d5ea5576fb (patch)
treef66748c875962518f9d4784fd684e189feb50d84 /drivers/char/rio/link.h
parent1a169689c2152ea599c94d622204f7bf5b7dc09f (diff)
[SCSI] lpfc 8.1.4 : Introduce lpfc_reset_barrier() function for resets on dual channel adapters
Introduce lpfc_reset_barrier() function for resets on dual channel adapters Workaround for a hardware errata on dual channel asics. There is a potential for the chip to lock up on a reset if a shared dma engine is in use. The (ugly) work around requires a reset process which uses a mailbox command to synchronize the independent channels prior to the reset to avoid the issue. Unfortunately, the timing windows required to ensure this workaround succeeds are very specific, meaning we can't release the cpu during the barrier. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/char/rio/link.h')
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