linux-kernel - [PATCH] iio: accel: fxls8962af: conditionally compile fxls8962af_i2c_raw_read

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Date:   Tue, 18 May 2021 16:48:28 -0700
From:   trix@...hat.com
To:     jic23@...nel.org, lars@...afoo.de, sean@...nix.com,
        andy.shevchenko@...il.com
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tom Rix <trix@...hat.com>
Subject: [PATCH] iio: accel: fxls8962af: conditionally compile fxls8962af_i2c_raw_read_errata3()

From: Tom Rix <trix@...hat.com>

The build is failing with this link error
ld: fxls8962af-core.o: in function `fxls8962af_fifo_transfer':
fxls8962af-core.c: undefined reference to `i2c_verify_client'

This is needed for the i2c variant, not the spi variant. So
conditionally compile based on CONFIG_FXLS8962AF_I2C.

Signed-off-by: Tom Rix <trix@...hat.com>
---
 drivers/iio/accel/fxls8962af-core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c
index 9fe5a18a605cc..b6d833e2058c8 100644
--- a/drivers/iio/accel/fxls8962af-core.c
+++ b/drivers/iio/accel/fxls8962af-core.c
@@ -624,6 +624,7 @@ static const struct iio_buffer_setup_ops fxls8962af_buffer_ops = {
 	.postdisable = fxls8962af_buffer_postdisable,
 };
 
+#if IS_ENABLED(CONFIG_FXLS8962AF_I2C)
 static int fxls8962af_i2c_raw_read_errata3(struct fxls8962af_data *data,
 					   u16 *buffer, int samples,
 					   int sample_length)
@@ -639,6 +640,7 @@ static int fxls8962af_i2c_raw_read_errata3(struct fxls8962af_data *data,
 
 	return ret;
 }
+#endif
 
 static int fxls8962af_fifo_transfer(struct fxls8962af_data *data,
 				    u16 *buffer, int samples)
@@ -648,6 +650,7 @@ static int fxls8962af_fifo_transfer(struct fxls8962af_data *data,
 	int total_length = samples * sample_length;
 	int ret;
 
+#if IS_ENABLED(CONFIG_FXLS8962AF_I2C)
 	if (i2c_verify_client(dev))
 		/*
 		 * Due to errata bug:
@@ -657,6 +660,7 @@ static int fxls8962af_fifo_transfer(struct fxls8962af_data *data,
 		ret = fxls8962af_i2c_raw_read_errata3(data, buffer, samples,
 						      sample_length);
 	else
+#endif
 		ret = regmap_raw_read(data->regmap, FXLS8962AF_BUF_X_LSB, buffer,
 				      total_length);
 
-- 
2.26.3