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| author | Arnd Bergmann <arnd@arndb.de> | 2017-02-14 22:21:51 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-02-16 03:39:45 +0100 |
| commit | d1da522fb8a70b8c527d4ad15f9e62218cc00f2c (patch) | |
| tree | c7e3b198ea46e0486e6233453d750aeb6344271b /drivers | |
| parent | scsi: megaraid_sas: array overflow in megasas_dump_frame() (diff) | |
| download | linux-d1da522fb8a70b8c527d4ad15f9e62218cc00f2c.tar.xz linux-d1da522fb8a70b8c527d4ad15f9e62218cc00f2c.zip | |
scsi: megaraid_sas: handle dma_addr_t right on 32-bit
When building with a dma_addr_t that is different from pointer size, we
get this warning:
drivers/scsi/megaraid/megaraid_sas_fusion.c: In function 'megasas_make_prp_nvme':
drivers/scsi/megaraid/megaraid_sas_fusion.c:1654:17: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
It's better to not pretend that the dma address is a pointer and instead
use a dma_addr_t consistently.
Fixes: 33203bc4d61b ("scsi: megaraid_sas: NVME fast path io support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 750090119f81..29650ba669da 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1619,7 +1619,8 @@ megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, { int sge_len, offset, num_prp_in_chain = 0; struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; - u64 *ptr_sgl, *ptr_sgl_phys; + u64 *ptr_sgl; + dma_addr_t ptr_sgl_phys; u64 sge_addr; u32 page_mask, page_mask_result; struct scatterlist *sg_scmd; @@ -1651,14 +1652,14 @@ megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, */ page_mask = mr_nvme_pg_size - 1; ptr_sgl = (u64 *)cmd->sg_frame; - ptr_sgl_phys = (u64 *)cmd->sg_frame_phys_addr; + ptr_sgl_phys = cmd->sg_frame_phys_addr; memset(ptr_sgl, 0, instance->max_chain_frame_sz); /* Build chain frame element which holds all prps except first*/ main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); - main_chain_element->Address = cpu_to_le64((uintptr_t)ptr_sgl_phys); + main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); main_chain_element->NextChainOffset = 0; main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | IEEE_SGE_FLAGS_SYSTEM_ADDR | @@ -1696,16 +1697,15 @@ megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, scmd_printk(KERN_NOTICE, scmd, "page boundary ptr_sgl: 0x%p\n", ptr_sgl); - ptr_sgl_phys++; - *ptr_sgl = - cpu_to_le64((uintptr_t)ptr_sgl_phys); + ptr_sgl_phys += 8; + *ptr_sgl = cpu_to_le64(ptr_sgl_phys); ptr_sgl++; num_prp_in_chain++; } *ptr_sgl = cpu_to_le64(sge_addr); ptr_sgl++; - ptr_sgl_phys++; + ptr_sgl_phys += 8; num_prp_in_chain++; sge_addr += mr_nvme_pg_size; |