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OpenCloudOS-Kernel
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ibmvscsis: Fix max transfer length 

Current code incorrectly calculates the max transfer length, since
it is assuming a 4k page table, but ppc64 all run on 64k page tables.

Cc: stable@vger.kernel.org
Reported-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
This commit is contained in:
Bryant G. Ly 2017-01-11 13:52:27 -06:00 committed by Bart Van Assche
parent 49def18533
commit 387b978cb0
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
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@ -46,6 +46,7 @@
#define INITIAL_SRP_LIMIT 800
#define DEFAULT_MAX_SECTORS 256
#define MAX_TXU 1024 * 1024
static uint max_vdma_size = MAX_H_COPY_RDMA;
@ -1443,7 +1444,7 @@ static long ibmvscsis_adapter_info(struct scsi_info *vscsi,
info->mad_version = cpu_to_be32(MAD_VERSION_1);
info->os_type = cpu_to_be32(LINUX);
memset(&info->port_max_txu[0], 0, sizeof(info->port_max_txu));
info->port_max_txu[0] = cpu_to_be32(128 * PAGE_SIZE);
info->port_max_txu[0] = cpu_to_be32(MAX_TXU);
dma_wmb();
rc = h_copy_rdma(sizeof(*info), vscsi->dds.window[LOCAL].liobn,