IB/ipath: Lower default number of kernel send buffers

The default calculation for the number of send buffers to allocate to
the kernel was too high for the PCIe version of the chip thus leaving
fewer than desired send buffers for user MPI applications.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c
index 1b1af349f19486ba620a312f3759400696df09a4..fa98aabdf76bf72210f888b2a8a7e3ec3fb04c29 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_init_chip.c
+++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c
@@ -737,7 +737,7 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit)
        uports = dd->ipath_cfgports ? dd->ipath_cfgports - 1 : 0;
        if (ipath_kpiobufs == 0) {
                /* not set by user (this is default) */
-               if (piobufs >= (uports * IPATH_MIN_USER_PORT_BUFCNT) + 32)
+               if (piobufs > 144)
                        kpiobufs = 32;
                else
                        kpiobufs = 16;