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From:   YueHaibing <yuehaibing@huawei.com>
To:     <bardliao@realtek.com>, <oder_chiou@realtek.com>,
        <lgirdwood@gmail.com>, <broonie@kernel.org>, <perex@perex.cz>,
        <tiwai@suse.com>, <benzh@chromium.org>, <cujomalainey@chromium.org>
CC:     <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
        YueHaibing <yuehaibing@huawei.com>
Subject: [PATCH -next] ASoC: rt5677: Fix build error without CONFIG_SPI
Date:   Wed, 27 Nov 2019 16:21:45 +0800
Message-ID: <20191127082145.6100-1-yuehaibing@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

If CONFIG_SPI is n, SND_SOC_RT5677_SPI also is n, building fails:

sound/soc/codecs/rt5677.o: In function `rt5677_irq':
rt5677.c:(.text+0x2dbf): undefined reference to `rt5677_spi_hotword_detected'
sound/soc/codecs/rt5677.o: In function `rt5677_dsp_work':
rt5677.c:(.text+0x3709): undefined reference to `rt5677_spi_write'

This adds stub helpers to fix this.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 461c623270e4 ("ASoC: rt5677: Load firmware via SPI using delayed work")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
 sound/soc/codecs/rt5677-spi.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/sound/soc/codecs/rt5677-spi.h b/sound/soc/codecs/rt5677-spi.h
index 3af36ec..088b779 100644
--- a/sound/soc/codecs/rt5677-spi.h
+++ b/sound/soc/codecs/rt5677-spi.h
@@ -9,9 +9,25 @@
 #ifndef __RT5677_SPI_H__
 #define __RT5677_SPI_H__
 
+#if IS_ENABLED(CONFIG_SND_SOC_RT5677_SPI)
 int rt5677_spi_read(u32 addr, void *rxbuf, size_t len);
 int rt5677_spi_write(u32 addr, const void *txbuf, size_t len);
 int rt5677_spi_write_firmware(u32 addr, const struct firmware *fw);
 void rt5677_spi_hotword_detected(void);
+#else
+static inline int rt5677_spi_read(u32 addr, void *rxbuf, size_t len)
+{
+	return -EINVAL;
+}
+static inline int rt5677_spi_write(u32 addr, const void *txbuf, size_t len)
+{
+	return -EINVAL;
+}
+static inline int rt5677_spi_write_firmware(u32 addr, const struct firmware *fw)
+{
+	return -EINVAL;
+}
+static inline void rt5677_spi_hotword_detected(void){}
+#endif
 
 #endif /* __RT5677_SPI_H__ */
-- 
2.7.4