diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_tio.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/staging/comedi/drivers/ni_tio.c b/drivers/staging/comedi/drivers/ni_tio.c index 55485c27198e..d099f542b796 100644 --- a/drivers/staging/comedi/drivers/ni_tio.c +++ b/drivers/staging/comedi/drivers/ni_tio.c @@ -226,14 +226,13 @@ static void ni_tio_set_sync_mode(struct ni_gpct *counter, int force_alt_sync) unsigned cidx = counter->counter_index; const unsigned counting_mode_reg = NITIO_CNT_MODE_REG(cidx); static const uint64_t min_normal_sync_period_ps = 25000; - const uint64_t clock_period_ps = ni_tio_clock_period_ps(counter, - ni_tio_generic_clock_src_select - (counter)); + uint64_t clock_period_ps; if (ni_tio_counting_mode_registers_present(counter_dev) == 0) return; - switch (ni_tio_get_soft_copy(counter, counting_mode_reg) & Gi_Counting_Mode_Mask) { + switch (ni_tio_get_soft_copy(counter, counting_mode_reg) & + Gi_Counting_Mode_Mask) { case Gi_Counting_Mode_QuadratureX1_Bits: case Gi_Counting_Mode_QuadratureX2_Bits: case Gi_Counting_Mode_QuadratureX4_Bits: @@ -243,6 +242,10 @@ static void ni_tio_set_sync_mode(struct ni_gpct *counter, int force_alt_sync) default: break; } + + clock_period_ps = ni_tio_clock_period_ps(counter, + ni_tio_generic_clock_src_select(counter)); + /* * It's not clear what we should do if clock_period is unknown, so we * are not using the alt sync bit in that case, but allow the caller |