IB/hfi1: Expand reported serial number
Expand the serial number space by using more bits
from the GUID.
Reviewed-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c
index becc7b1..c936834 100644
--- a/drivers/infiniband/hw/hfi1/chip.c
+++ b/drivers/infiniband/hw/hfi1/chip.c
@@ -14601,8 +14601,14 @@
/* set up LCB access - must be after set_up_interrupts() */
init_lcb_access(dd);
+ /*
+ * Serial number is created from the base guid:
+ * [27:24] = base guid [38:35]
+ * [23: 0] = base guid [23: 0]
+ */
snprintf(dd->serial, SERIAL_MAX, "0x%08llx\n",
- dd->base_guid & 0xFFFFFF);
+ (dd->base_guid & 0xFFFFFF) |
+ ((dd->base_guid >> 11) & 0xF000000));
dd->oui1 = dd->base_guid >> 56 & 0xFF;
dd->oui2 = dd->base_guid >> 48 & 0xFF;