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Subject[PATCH] iio: adc: make array ch_to_mux static, makes object code smaller
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From: Colin Ian King <colin.king@canonical.com>

Don't populate const array ch_to_mux on the stack, instead
make it static. Makes the object code smaller by over 200 bytes:

Before:
text data bss dec hex filename
12663 1648 128 14439 3867 drivers/iio/adc/ti-adc12138.o

After
text data bss dec hex filename
12353 1744 128 14225 3791 drivers/iio/adc/ti-adc12138.o

(gcc version 7.2.0 x86_64)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/iio/adc/ti-adc12138.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ti-adc12138.c b/drivers/iio/adc/ti-adc12138.c
index bf890244789a..703d68ae96b7 100644
--- a/drivers/iio/adc/ti-adc12138.c
+++ b/drivers/iio/adc/ti-adc12138.c
@@ -164,7 +164,7 @@ static int __adc12138_start_conv(struct adc12138 *adc,
void *data, int len)

{
- const u8 ch_to_mux[] = { 0, 4, 1, 5, 2, 6, 3, 7 };
+ static const u8 ch_to_mux[] = { 0, 4, 1, 5, 2, 6, 3, 7 };
u8 mode = (ch_to_mux[channel->channel] << 4) |
(channel->differential ? 0 : 0x80);

--
2.14.1
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