NVMe: Fix the buffer size passed in GetLogPage(CDW10.NUMD)

In GetLogPage the buffer size passed to device is a 0's based value.

Signed-off-by: Indraneel M <indraneel.m@samsung.com>
Reported-by: Shiro Itou <shiro.itou@outlook.com>
Reviewed-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

diff --git a/drivers/block/nvme-scsi.c b/drivers/block/nvme-scsi.c
index da3b252dea6fdab2bfef119e8eeb768e7e643f89..7ec61c4a817ceee53df1e797c55e25c8b4344b28 100644 (file)
--- a/drivers/block/nvme-scsi.c
+++ b/drivers/block/nvme-scsi.c
@@ -1014,8 +1014,8 @@ static int nvme_trans_log_info_exceptions(struct nvme_ns *ns,
        c.common.opcode = nvme_admin_get_log_page;
        c.common.nsid = cpu_to_le32(0xFFFFFFFF);
        c.common.prp1 = cpu_to_le64(dma_addr);
-       c.common.cdw10[0] = cpu_to_le32(((sizeof(struct nvme_smart_log) /
-                       BYTES_TO_DWORDS) << 16) | NVME_GET_SMART_LOG_PAGE);
+       c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
+                       BYTES_TO_DWORDS) - 1) << 16) | NVME_GET_SMART_LOG_PAGE);
        res = nvme_submit_admin_cmd(dev, &c, NULL);
        if (res != NVME_SC_SUCCESS) {
                temp_c = LOG_TEMP_UNKNOWN;
@@ -1082,8 +1082,8 @@ static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
        c.common.opcode = nvme_admin_get_log_page;
        c.common.nsid = cpu_to_le32(0xFFFFFFFF);
        c.common.prp1 = cpu_to_le64(dma_addr);
-       c.common.cdw10[0] = cpu_to_le32(((sizeof(struct nvme_smart_log) /
-                       BYTES_TO_DWORDS) << 16) | NVME_GET_SMART_LOG_PAGE);
+       c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
+                       BYTES_TO_DWORDS) - 1) << 16) | NVME_GET_SMART_LOG_PAGE);
        res = nvme_submit_admin_cmd(dev, &c, NULL);
        if (res != NVME_SC_SUCCESS) {
                temp_c_cur = LOG_TEMP_UNKNOWN;