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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 <heikki.krogerus@linux.intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -38,11 +38,21 @@ struct hsu_dma_chip {
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struct hsu_dma_platform_data *pdata;
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};
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#if IS_ENABLED(CONFIG_HSU_DMA)
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/* Export to the internal users */
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irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr);
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/* Export to the platform drivers */
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int hsu_dma_probe(struct hsu_dma_chip *chip);
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int hsu_dma_remove(struct hsu_dma_chip *chip);
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#else
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static inline irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip,
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unsigned short nr)
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{
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return IRQ_NONE;
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}
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static inline int hsu_dma_probe(struct hsu_dma_chip *chip) { return -ENODEV; }
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static inline int hsu_dma_remove(struct hsu_dma_chip *chip) { return 0; }
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#endif /* CONFIG_HSU_DMA */
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#endif /* _DMA_HSU_H */
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