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IB/hfi1: Expand reported serial number

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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>
This commit is contained in:
Ira Weiny 2016-07-27 21:09:40 -04:00 committed by Doug Ledford
parent c492980269
commit fc0b76c016
1 changed files with 7 additions and 1 deletions
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8
drivers/infiniband/hw/hfi1/chip.c
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@ -14601,8 +14601,14 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev,
/* 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;