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scsi: lpfc: remove a bogus pci_dma_sync_single_for_device call

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dma_alloc_coherent allocates memory that can be used by the cpu and the
device at the same time, calls to pci_dma_sync_* are not required, and in
fact actively harmful on some architectures like arm.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2018-10-11 09:16:13 +02:00 committed by Martin K. Petersen
parent 67d98f0a83
commit 416c461372
1 changed files with 0 additions and 3 deletions
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3
drivers/scsi/lpfc/lpfc_bsg.c
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@ -2844,9 +2844,6 @@ diag_cmd_data_alloc(struct lpfc_hba *phba,
if (nocopydata) {
bpl->tus.f.bdeFlags = 0;
pci_dma_sync_single_for_device(phba->pcidev,
dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);
} else {
memset((uint8_t *)dmp->dma.virt, 0, cnt);
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;