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scsi: lpfc: Memory allocation error during driver start-up on power8

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The driver fails to allocate command buffers in the routine
lpfc_new_scsi_buf_s4

There is an inconsistency between lpfc_mem_alloc(), where the
phba->lpfc_sg_dma_buf_pool is created, and lpfc_new_scsi_buf_s4(),
when we allocate a buffer from the pool and check the alignment.  The
alignment should be on a page boundary, based on LPFC_SLI3_BG_ENABLED in
sli3_options, for both cases.

Fix by explicitly tracking sli4 vs sli3 and BG options.  The result is that
phba->cfg_sg_dma_buf_size is now set correctly for SLI-4.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2018-03-05 12:04:08 -08:00
committed by Martin K. Petersen
parent e29d74f8eb
commit f44ac12f1d
4 changed files with 21 additions and 11 deletions
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2
drivers/scsi/lpfc/lpfc_init.c
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@@ -5912,7 +5912,7 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
* Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
* used to create the sg_dma_buf_pool must be calculated.
*/
if (phba->cfg_enable_bg) {
if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
/*
* The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
* the FCP rsp, and a SGE. Sice we have no control