1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 62b6c2cc80b5..d2d95ff5353b 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4258,6 +4258,13 @@ static void cciss_find_board_params(ctlr_info_t *h)
         h->nr_cmds = h->max_commands - 4 - cciss_tape_cmds;
         h->maxsgentries = readl(&(h->cfgtable->MaxSGElements));
         /*
+         * The P600 may exhibit poor performnace under some workloads
+         * if we use the value in the configuration table. Limit this
+         * controller to MAXSGENTRIES (32) instead.
+         */
+        if (h->board_id == 0x3225103C)
+                h->maxsgentries = MAXSGENTRIES;
+        /*
          * Limit in-command s/g elements to 32 save dma'able memory.
          * Howvever spec says if 0, use 31
          */