staging/rdma/hfi1: Disable thermal polling before sensor initialization

During driver load the thermal sensor needs to be reset prior
to initialization of the sensor. This prevents a possible sensor lock
up which can cause the wrong temperature value to be reported.
This fix leads to remove disabling thermal polling from
reset_asic_csrs() function.

Reviewed by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Jareer Abdel-Qader <jareer.h.abdel-qader@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jareer Abdel-Qader 2015-11-06 20:07:00 -05:00 committed by Greg Kroah-Hartman
parent 65fcf55764
commit 4ef98989cb
1 changed files with 4 additions and 2 deletions

View File

@ -9449,7 +9449,7 @@ static void reset_asic_csrs(struct hfi1_devdata *dd)
/* We might want to retain this state across FLR if we ever use it */
write_csr(dd, ASIC_CFG_DRV_STR, 0);
write_csr(dd, ASIC_CFG_THERM_POLL_EN, 0);
/* ASIC_CFG_THERM_POLL_EN leave alone */
/* ASIC_STS_THERM read-only */
/* ASIC_CFG_RESET leave alone */
@ -10794,7 +10794,9 @@ static int thermal_init(struct hfi1_devdata *dd)
acquire_hw_mutex(dd);
dd_dev_info(dd, "Initializing thermal sensor\n");
/* Disable polling of thermal readings */
write_csr(dd, ASIC_CFG_THERM_POLL_EN, 0x0);
msleep(100);
/* Thermal Sensor Initialization */
/* Step 1: Reset the Thermal SBus Receiver */
ret = sbus_request_slow(dd, SBUS_THERMAL, 0x0,