4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryant G. Ly <bryan...@linux.vnet.ibm.com>
commit 387b978cb0d12cf3720ecb17e652e0a9991a08e2 upstream.
Current code incorrectly calculates the max transfer length, since
it is assuming a 4k page table, but ppc64 all run on 64k page tables.
Reported-by: Steven Royer <sero...@linux.vnet.ibm.com>
Tested-by: Steven Royer <sero...@linux.vnet.ibm.com>
Signed-off-by: Bryant G. Ly <bryan...@linux.vnet.ibm.com>
Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -45,6 +45,7 @@
#define INITIAL_SRP_LIMIT 800
#define DEFAULT_MAX_SECTORS 256
+#define MAX_TXU 1024 * 1024
static uint max_vdma_size = MAX_H_COPY_RDMA;
@@ -1291,7 +1292,7 @@ static long ibmvscsis_adapter_info(struc
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,
