[SCSI] qla4xxx: Throttle active IOCBs to firmware limits

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Problem:
QLA4xxx firmware may assert if given more IOCBs than it can handle.

Solution:
The driver was updated to throttle the number of active IOCBs based
on the total number of IOCB buffers received from get_firmware_status
mbx_sts[2].

Signed-off-by: Karen Higgins <karen.higgins@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

...

This commit is contained in:

Karen Higgins 2013-01-20 23:51:00 -05:00 • committed by James Bottomley

parent ff4108dce9

commit 5b1c1bff07

3 changed files with 21 additions and 3 deletions

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2

drivers/scsi/qla4xxx/ql4_def.h

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2

drivers/scsi/qla4xxx/ql4_iocb.c

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20

drivers/scsi/qla4xxx/ql4_mbx.c

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