diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-10-18 15:10:16 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-11-15 14:27:08 -0500 |
| commit | fdc32fb38d76f95fa98bc8efa6c3a91e68bab64c (patch) | |
| tree | a783b88acff15fcc25350e7548b1414fbc067450 /drivers/scsi/esas2r/esas2r_init.c | |
| parent | c79cd9a24ef71c5d9b9185a20b387391abaa6cc7 (diff) | |
| download | linux-fdc32fb38d76f95fa98bc8efa6c3a91e68bab64c.tar.bz2 | |
scsi: esas2r: use dma_set_mask_and_coherent
The driver currently uses pci_set_dma_mask despite otherwise using the
generic DMA API. Also move the dma_get_required_mask check before actually
setting the dma mask so that we don't end up with inconsistent settings in
corner cases.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/esas2r/esas2r_init.c')
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_init.c | 49 |
1 files changed, 14 insertions, 35 deletions
diff --git a/drivers/scsi/esas2r/esas2r_init.c b/drivers/scsi/esas2r/esas2r_init.c index bbe77db8938d..46b2c83ba21f 100644 --- a/drivers/scsi/esas2r/esas2r_init.c +++ b/drivers/scsi/esas2r/esas2r_init.c @@ -266,6 +266,7 @@ int esas2r_init_adapter(struct Scsi_Host *host, struct pci_dev *pcid, int i; void *next_uncached; struct esas2r_request *first_request, *last_request; + bool dma64 = false; if (index >= MAX_ADAPTERS) { esas2r_log(ESAS2R_LOG_CRIT, @@ -286,42 +287,20 @@ int esas2r_init_adapter(struct Scsi_Host *host, struct pci_dev *pcid, a->pcid = pcid; a->host = host; - if (sizeof(dma_addr_t) > 4) { - const uint64_t required_mask = dma_get_required_mask - (&pcid->dev); - if (required_mask > DMA_BIT_MASK(32) - && !pci_set_dma_mask(pcid, DMA_BIT_MASK(64)) - && !pci_set_consistent_dma_mask(pcid, - DMA_BIT_MASK(64))) { - esas2r_log_dev(ESAS2R_LOG_INFO, - &(a->pcid->dev), - "64-bit PCI addressing enabled\n"); - } else if (!pci_set_dma_mask(pcid, DMA_BIT_MASK(32)) - && !pci_set_consistent_dma_mask(pcid, - DMA_BIT_MASK(32))) { - esas2r_log_dev(ESAS2R_LOG_INFO, - &(a->pcid->dev), - "32-bit PCI addressing enabled\n"); - } else { - esas2r_log(ESAS2R_LOG_CRIT, - "failed to set DMA mask"); - esas2r_kill_adapter(index); - return 0; - } - } else { - if (!pci_set_dma_mask(pcid, DMA_BIT_MASK(32)) - && !pci_set_consistent_dma_mask(pcid, - DMA_BIT_MASK(32))) { - esas2r_log_dev(ESAS2R_LOG_INFO, - &(a->pcid->dev), - "32-bit PCI addressing enabled\n"); - } else { - esas2r_log(ESAS2R_LOG_CRIT, - "failed to set DMA mask"); - esas2r_kill_adapter(index); - return 0; - } + if (sizeof(dma_addr_t) > 4 && + dma_get_required_mask(&pcid->dev) > DMA_BIT_MASK(32) && + !dma_set_mask_and_coherent(&pcid->dev, DMA_BIT_MASK(64))) + dma64 = true; + + if (!dma64 && dma_set_mask_and_coherent(&pcid->dev, DMA_BIT_MASK(32))) { + esas2r_log(ESAS2R_LOG_CRIT, "failed to set DMA mask"); + esas2r_kill_adapter(index); + return 0; } + + esas2r_log_dev(ESAS2R_LOG_INFO, &pcid->dev, + "%s-bit PCI addressing enabled\n", dma64 ? "64" : "32"); + esas2r_adapters[index] = a; sprintf(a->name, ESAS2R_DRVR_NAME "_%02d", index); esas2r_debug("new adapter %p, name %s", a, a->name); |