linux-kernel - [PATCH 6/8 v4] staging: pi433: remove unused function

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Message-Id: <20171214152020.15859-1-Valentin.Vidic@CARNet.hr>
Date:   Thu, 14 Dec 2017 16:20:20 +0100
From:   Valentin Vidic <Valentin.Vidic@...Net.hr>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Marcus Wolf <marcus.wolf@...rthome-wolf.de>,
        devel@...verdev.osuosl.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org,
        Marcin Ciupak <marcin.s.ciupak@...il.com>,
        Marcus Wolf <linux@...f-entwicklungen.de>,
        Simon Sandström <simon@...anor.nu>,
        Valentin Vidic <Valentin.Vidic@...Net.hr>
Subject: [PATCH 6/8 v4] staging: pi433: remove unused function

As it turns out rf69_get_lna_gain is not used at all.

Signed-off-by: Valentin Vidic <Valentin.Vidic@...Net.hr>
---
v2: - drop change for SHIFT_DATAMODUL_MODULATION_TYPE
    - move shifting to the header file
v3: - drop auto case
    - use CURRENT suffix
    - precompute define values
v4: - drop the whole function since it is not called
      from anywhere

 drivers/staging/pi433/rf69.c | 18 ------------------
 drivers/staging/pi433/rf69.h |  1 -
 2 files changed, 19 deletions(-)

diff --git a/drivers/staging/pi433/rf69.c b/drivers/staging/pi433/rf69.c
index f77ecd60f43a..2aae23a813a0 100644
--- a/drivers/staging/pi433/rf69.c
+++ b/drivers/staging/pi433/rf69.c
@@ -334,24 +334,6 @@ int rf69_set_lna_gain(struct spi_device *spi, enum lnaGain lnaGain)
 	}
 }
 
-enum lnaGain rf69_get_lna_gain(struct spi_device *spi)
-{
-	u8 currentValue;
-
-	currentValue = rf69_read_reg(spi, REG_LNA);
-
-	switch (currentValue & MASK_LNA_CURRENT_GAIN >> 3) { // improvement: change 3 to define
-	case LNA_GAIN_AUTO:	    return automatic;
-	case LNA_GAIN_MAX:	    return max;
-	case LNA_GAIN_MAX_MINUS_6:  return maxMinus6;
-	case LNA_GAIN_MAX_MINUS_12: return maxMinus12;
-	case LNA_GAIN_MAX_MINUS_24: return maxMinus24;
-	case LNA_GAIN_MAX_MINUS_36: return maxMinus36;
-	case LNA_GAIN_MAX_MINUS_48: return maxMinus48;
-	default:		    return undefined;
-	}
-}
-
 int rf69_set_dc_cut_off_frequency_intern(struct spi_device *spi, u8 reg, enum dccPercent dccPercent)
 {
 	switch (dccPercent) {
diff --git a/drivers/staging/pi433/rf69.h b/drivers/staging/pi433/rf69.h
index e8803241b13b..e8640b0ee33b 100644
--- a/drivers/staging/pi433/rf69.h
+++ b/drivers/staging/pi433/rf69.h
@@ -39,7 +39,6 @@ int rf69_set_output_power_level(struct spi_device *spi, u8 powerLevel);
 int rf69_set_pa_ramp(struct spi_device *spi, enum paRamp paRamp);
 int rf69_set_antenna_impedance(struct spi_device *spi, enum antennaImpedance antennaImpedance);
 int rf69_set_lna_gain(struct spi_device *spi, enum lnaGain lnaGain);
-enum lnaGain rf69_get_lna_gain(struct spi_device *spi);
 int rf69_set_dc_cut_off_frequency_intern(struct spi_device *spi, u8 reg, enum dccPercent dccPercent);
 int rf69_set_dc_cut_off_frequency(struct spi_device *spi, enum dccPercent dccPercent);
 int rf69_set_dc_cut_off_frequency_during_afc(struct spi_device *spi, enum dccPercent dccPercent);
-- 
2.15.0