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IB/hfi1: Preserve external device completed bit

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The driver should not change the external device request
completed bit when not actually doing an external device
request.

Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dean Luick 2016-12-07 19:33:40 -08:00 committed by Doug Ledford
parent 9b86071c5e
commit 0080167467
1 changed files with 4 additions and 1 deletions
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5
drivers/infiniband/hw/hfi1/chip.c
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@ -8488,7 +8488,10 @@ static int do_8051_command(
*/
if (type == HCMD_WRITE_LCB_CSR) {
in_data |= ((*out_data) & 0xffffffffffull) << 8;
reg = ((((*out_data) >> 40) & 0xff) <<
/* must preserve COMPLETED - it is tied to hardware */
reg = read_csr(dd, DC_DC8051_CFG_EXT_DEV_0);
reg &= DC_DC8051_CFG_EXT_DEV_0_COMPLETED_SMASK;
reg |= ((((*out_data) >> 40) & 0xff) <<
DC_DC8051_CFG_EXT_DEV_0_RETURN_CODE_SHIFT)
| ((((*out_data) >> 48) & 0xffff) <<
DC_DC8051_CFG_EXT_DEV_0_RSP_DATA_SHIFT);