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From: Rikard Falkeborn <rikard.falkeborn@gmail.com>
To: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
	linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
	Rikard Falkeborn <rikard.falkeborn@gmail.com>,
	linux-pm@vger.kernel.org,
	Michael Hennerich <Michael.Hennerich@analog.com>
Subject: [PATCH 4/6] iio: dac: ad5686: Constify static struct iio_chan_spec
Date: Tue, 26 May 2020 23:02:21 +0200	[thread overview]
Message-ID: <20200526210223.1672-5-rikard.falkeborn@gmail.com> (raw)
In-Reply-To: <20200526210223.1672-1-rikard.falkeborn@gmail.com>

These are never modified and can be made const to allow the compiler to
put it in read-only memory.

Before:
   text    data     bss     dec     hex filename
   6642   12608      64   19314    4b72 drivers/iio/dac/ad5686.o

After:
   text    data     bss     dec     hex filename
  16946    2304      64   19314    4b72 drivers/iio/dac/ad5686.o

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
---
 drivers/iio/dac/ad5686.c | 8 ++++----
 drivers/iio/dac/ad5686.h | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index 8dd67da0a7da..6de48f618c95 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -206,12 +206,12 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = {
 }
 
 #define DECLARE_AD5693_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 0, bits, _shift),		\
 }
 
 #define DECLARE_AD5686_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 1, bits, _shift),		\
 		AD5868_CHANNEL(1, 2, bits, _shift),		\
 		AD5868_CHANNEL(2, 4, bits, _shift),		\
@@ -219,7 +219,7 @@ static struct iio_chan_spec name[] = {				\
 }
 
 #define DECLARE_AD5676_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 0, bits, _shift),		\
 		AD5868_CHANNEL(1, 1, bits, _shift),		\
 		AD5868_CHANNEL(2, 2, bits, _shift),		\
@@ -231,7 +231,7 @@ static struct iio_chan_spec name[] = {				\
 }
 
 #define DECLARE_AD5679_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 0, bits, _shift),		\
 		AD5868_CHANNEL(1, 1, bits, _shift),		\
 		AD5868_CHANNEL(2, 2, bits, _shift),		\
diff --git a/drivers/iio/dac/ad5686.h b/drivers/iio/dac/ad5686.h
index 52009b5eef88..a15f2970577e 100644
--- a/drivers/iio/dac/ad5686.h
+++ b/drivers/iio/dac/ad5686.h
@@ -104,7 +104,7 @@ typedef int (*ad5686_read_func)(struct ad5686_state *st, u8 addr);
 struct ad5686_chip_info {
 	u16				int_vref_mv;
 	unsigned int			num_channels;
-	struct iio_chan_spec		*channels;
+	const struct iio_chan_spec	*channels;
 	enum ad5686_regmap_type		regmap_type;
 };
 
-- 
2.26.2


  parent reply	other threads:[~2020-05-26 21:03 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-26 21:02 [PATCH 0/6] drivers/iio: Constify structs Rikard Falkeborn
2020-05-26 21:02 ` [PATCH 1/6] iio: adc: max11100: Constify struct iio_chan_spec Rikard Falkeborn
2020-05-31 13:07   ` Jonathan Cameron
2020-05-26 21:02 ` [PATCH 2/6] iio: dac: ad5380: Constify struct iio_chan_spec_ext_info Rikard Falkeborn
2020-05-27  4:22   ` Ardelean, Alexandru
2020-05-31 13:44     ` Jonathan Cameron
2020-05-26 21:02 ` [PATCH 3/6] iio: dac: ad5592r-base: " Rikard Falkeborn
2020-05-27  4:22   ` Ardelean, Alexandru
2020-05-31 13:47     ` Jonathan Cameron
2020-05-26 21:02 ` Rikard Falkeborn [this message]
2020-05-27  4:50   ` [PATCH 4/6] iio: dac: ad5686: Constify static struct iio_chan_spec Ardelean, Alexandru
2020-05-31 13:47     ` Jonathan Cameron
2020-08-18 19:30       ` Rikard Falkeborn
2020-08-22 10:31         ` Jonathan Cameron
2020-05-26 21:02 ` [PATCH 5/6] iio: light: stk3310: Constify regmap_config Rikard Falkeborn
2020-05-31 13:47   ` Jonathan Cameron
2020-05-26 21:02 ` [PATCH 6/6] iio: magnetometer: mmc35240: Constify struct reg_default Rikard Falkeborn
2020-05-31 13:48   ` Jonathan Cameron

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