From: Jareer Abdel-Qader Date: Sat, 7 Nov 2015 01:07:00 +0000 (-0500) Subject: staging/rdma/hfi1: Disable thermal polling before sensor initialization X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4ef98989cb08af8c7c9c955cd69327bb67dcd027;p=linux-beck.git 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 Reviewed by: Easwar Hariharan Signed-off-by: Jareer Abdel-Qader Signed-off-by: Ira Weiny Signed-off-by: Jubin John Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/rdma/hfi1/chip.c b/drivers/staging/rdma/hfi1/chip.c index dd2ba2516a66..e842aee00535 100644 --- a/drivers/staging/rdma/hfi1/chip.c +++ b/drivers/staging/rdma/hfi1/chip.c @@ -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,