dma-mapping: remove leftover NULL device support
Most dma_map_ops implementations already had some issues with a NULL
device, or did simply crash if one was fed to them. Now that we have
cleaned up all the obvious offenders we can stop to pretend we
support this mode.
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 75e60be..6309a72 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -267,9 +267,9 @@
static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
{
- if (dev && dev->dma_ops)
+ if (dev->dma_ops)
return dev->dma_ops;
- return get_arch_dma_ops(dev ? dev->bus : NULL);
+ return get_arch_dma_ops(dev->bus);
}
static inline void set_dma_ops(struct device *dev,
@@ -650,7 +650,7 @@
static inline u64 dma_get_mask(struct device *dev)
{
- if (dev && dev->dma_mask && *dev->dma_mask)
+ if (dev->dma_mask && *dev->dma_mask)
return *dev->dma_mask;
return DMA_BIT_MASK(32);
}