diff options
| author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2015-10-13 13:29:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-17 21:22:08 -0700 |
| commit | 47f82f1adf701b31d1816bf45118f8e83c02588e (patch) | |
| tree | cfa82b259b2da64212bc3db66bfd603a04eb1780 /include/linux/dma/hsu.h | |
| parent | ec2f1b67f526ee0b314103f7bf2846289fa0f435 (diff) | |
| download | linux-47f82f1adf701b31d1816bf45118f8e83c02588e.tar.gz linux-47f82f1adf701b31d1816bf45118f8e83c02588e.tar.bz2 linux-47f82f1adf701b31d1816bf45118f8e83c02588e.zip | |
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>
Diffstat (limited to 'include/linux/dma/hsu.h')
| -rw-r--r-- | include/linux/dma/hsu.h | 10 |
1 files changed, 10 insertions, 0 deletions
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 */ |