From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Steven Royer , "Bryant G. Ly" , Bart Van Assche Subject: [PATCH 4.9 065/130] ibmvscsis: Fix max transfer length Date: Tue, 24 Jan 2017 08:55:05 +0100 Message-Id: <20170124075537.612375814@linuxfoundation.org> In-Reply-To: <20170124075534.905042535@linuxfoundation.org> References: <20170124075534.905042535@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bryant G. Ly 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 Tested-by: Steven Royer Signed-off-by: Bryant G. Ly Signed-off-by: Bart Van Assche Signed-off-by: Greg Kroah-Hartman --- 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,