We get 1 warning when building kernel with W=1: drivers/dma/pxa_dma.c:1525:5: warning: no previous prototype for 'pxad_toggle_reserved_channel' [-Wmissing-prototypes]
In fact, this function is called by no one, so this patch removes it. Signed-off-by: Baoyou Xie <baoyou....@linaro.org> --- drivers/dma/pxa_dma.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index 3f56f9c..7d9b1cc 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -1522,15 +1522,6 @@ bool pxad_filter_fn(struct dma_chan *chan, void *param) } EXPORT_SYMBOL_GPL(pxad_filter_fn); -int pxad_toggle_reserved_channel(int legacy_channel) -{ - if (legacy_unavailable & (BIT(legacy_channel))) - return -EBUSY; - legacy_reserved ^= BIT(legacy_channel); - return 0; -} -EXPORT_SYMBOL_GPL(pxad_toggle_reserved_channel); - module_platform_driver(pxad_driver); MODULE_DESCRIPTION("Marvell PXA Peripheral DMA Driver"); -- 2.7.4