staging: comedi: ni_stc.h: reg_type is not needed by MSeries_AI_Config_Bank_Bits()

This helper function sets the bits in the M_Offset_AI_Config_FIFO_Data register
to select the correct bank to configure a given analog output channel. The NI
M Series boards are defined by the boardinfo to have 16, 32, or 80 channels.
Only 2 of the M Series boards have 80 channels, those boards happen to have a
reg_type of ni_reg_622x.

The bank for the 16 and 32 channel boards is selected by the 'channel & 0x30'
calculation (comedi channels 0 to 15 or 31). This also selects the bank for the
first 64 channels of the 80 channel boards. The additional '|= 0x400' sets the
bank to access the extra channels (comedi channels >= 63).

Since all the non ni_reg_622x boards have at most 32 channels, the extra check
of the 'reg_type' is not required in this function. Remove it as well as the
parameter.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index c1b1d7c..7e038a2 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -1808,8 +1808,7 @@ static void ni_m_series_load_channelgain_list(struct comedi_device *dev,
                        break;
                }
                config_bits |= MSeries_AI_Config_Channel_Bits(chan);
-               config_bits |=
-                   MSeries_AI_Config_Bank_Bits(board->reg_type, chan);
+               config_bits |= MSeries_AI_Config_Bank_Bits(chan);
                config_bits |= MSeries_AI_Config_Gain_Bits(range_code);
                if (i == n_chan - 1)
                        config_bits |= MSeries_AI_Config_Last_Channel_Bit;

diff --git a/drivers/staging/comedi/drivers/ni_stc.h b/drivers/staging/comedi/drivers/ni_stc.h
index 2efd1ec..aca6e5c 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_stc.h
+++ b/drivers/staging/comedi/drivers/ni_stc.h
@@ -990,14 +990,12 @@ static inline unsigned MSeries_AI_Config_Channel_Bits(unsigned channel)
        return channel & 0xf;
 }
 
-static inline unsigned MSeries_AI_Config_Bank_Bits(enum ni_reg_type reg_type,
-                                                  unsigned channel)
+static inline unsigned MSeries_AI_Config_Bank_Bits(unsigned channel)
 {
        unsigned bits = channel & 0x30;
-       if (reg_type == ni_reg_622x) {
-               if (channel & 0x40)
-                       bits |= 0x400;
-       }
+
+       if (channel & 0x40)
+               bits |= 0x400;
        return bits;
 }