From 47f82f1adf701b31d1816bf45118f8e83c02588e Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Tue, 13 Oct 2015 13:29:04 +0300 Subject: [PATCH] dmaengine: hsu: introduce stubs for the exported functions This allows UART drivers to register HSU DMA Engine without being forced to use ifdefs. Signed-off-by: Heikki Krogerus Acked-by: Vinod Koul Acked-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- include/linux/dma/hsu.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/dma/hsu.h b/include/linux/dma/hsu.h index 234393a6997b..765b414eef98 100644 --- a/include/linux/dma/hsu.h +++ b/include/linux/dma/hsu.h @@ -38,11 +38,21 @@ struct hsu_dma_chip { struct hsu_dma_platform_data *pdata; }; +#if IS_ENABLED(CONFIG_HSU_DMA) /* Export to the internal users */ irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr); /* Export to the platform drivers */ int hsu_dma_probe(struct hsu_dma_chip *chip); int hsu_dma_remove(struct hsu_dma_chip *chip); +#else +static inline irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, + unsigned short nr) +{ + return IRQ_NONE; +} +static inline int hsu_dma_probe(struct hsu_dma_chip *chip) { return -ENODEV; } +static inline int hsu_dma_remove(struct hsu_dma_chip *chip) { return 0; } +#endif /* CONFIG_HSU_DMA */ #endif /* _DMA_HSU_H */ -- 2.20.1