IB/srp: Introduce a local variable in srp_add_one()

This patch makes the srp_add_one() code more compact and does not
change any functionality.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 8bb720c..c216c6e 100644 (file)
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -3527,6 +3527,7 @@ free_host:
 static void srp_add_one(struct ib_device *device)
 {
        struct srp_device *srp_dev;
+       struct ib_device_attr *attr = &device->attrs;
        struct srp_host *host;
        int mr_page_shift, p;
        u64 max_pages_per_mr;
@@ -3541,25 +3542,25 @@ static void srp_add_one(struct ib_device *device)
         * minimum of 4096 bytes. We're unlikely to build large sglists
         * out of smaller entries.
         */
-       mr_page_shift           = max(12, ffs(device->attrs.page_size_cap) - 1);
+       mr_page_shift           = max(12, ffs(attr->page_size_cap) - 1);
        srp_dev->mr_page_size   = 1 << mr_page_shift;
        srp_dev->mr_page_mask   = ~((u64) srp_dev->mr_page_size - 1);
-       max_pages_per_mr        = device->attrs.max_mr_size;
+       max_pages_per_mr        = attr->max_mr_size;
        do_div(max_pages_per_mr, srp_dev->mr_page_size);
        pr_debug("%s: %llu / %u = %llu <> %u\n", __func__,
-                device->attrs.max_mr_size, srp_dev->mr_page_size,
+                attr->max_mr_size, srp_dev->mr_page_size,
                 max_pages_per_mr, SRP_MAX_PAGES_PER_MR);
        srp_dev->max_pages_per_mr = min_t(u64, SRP_MAX_PAGES_PER_MR,
                                          max_pages_per_mr);
 
        srp_dev->has_fmr = (device->alloc_fmr && device->dealloc_fmr &&
                            device->map_phys_fmr && device->unmap_fmr);
-       srp_dev->has_fr = (device->attrs.device_cap_flags &
+       srp_dev->has_fr = (attr->device_cap_flags &
                           IB_DEVICE_MEM_MGT_EXTENSIONS);
        if (!never_register && !srp_dev->has_fmr && !srp_dev->has_fr) {
                dev_warn(&device->dev, "neither FMR nor FR is supported\n");
        } else if (!never_register &&
-                  device->attrs.max_mr_size >= 2 * srp_dev->mr_page_size) {
+                  attr->max_mr_size >= 2 * srp_dev->mr_page_size) {
                srp_dev->use_fast_reg = (srp_dev->has_fr &&
                                         (!srp_dev->has_fmr || prefer_fr));
                srp_dev->use_fmr = !srp_dev->use_fast_reg && srp_dev->has_fmr;
@@ -3572,13 +3573,13 @@ static void srp_add_one(struct ib_device *device)
        if (srp_dev->use_fast_reg) {
                srp_dev->max_pages_per_mr =
                        min_t(u32, srp_dev->max_pages_per_mr,
-                             device->attrs.max_fast_reg_page_list_len);
+                             attr->max_fast_reg_page_list_len);
        }
        srp_dev->mr_max_size    = srp_dev->mr_page_size *
                                   srp_dev->max_pages_per_mr;
        pr_debug("%s: mr_page_shift = %d, device->max_mr_size = %#llx, device->max_fast_reg_page_list_len = %u, max_pages_per_mr = %d, mr_max_size = %#x\n",
-                device->name, mr_page_shift, device->attrs.max_mr_size,
-                device->attrs.max_fast_reg_page_list_len,
+                device->name, mr_page_shift, attr->max_mr_size,
+                attr->max_fast_reg_page_list_len,
                 srp_dev->max_pages_per_mr, srp_dev->mr_max_size);
 
        INIT_LIST_HEAD(&srp_dev->dev_list);