Hi Christoph,
On Fri, Dec 29, 2017 at 9:18 AM, Christoph Hellwig <hch@xxxxxx> wrote:
Roughly based on the x86 pci-nommu implementation.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Thanks for your patch!
--- a/lib/dma-direct.c
+++ b/lib/dma-direct.c
@@ -9,6 +9,24 @@
#include <linux/scatterlist.h>
#include <linux/pfn.h>
+#define DIRECT_MAPPING_ERROR 0
+
+static bool
+check_addr(struct device *dev, dma_addr_t dma_addr, size_t size,
+ const char *caller)
+{
+ if (unlikely(dev && !dma_capable(dev, dma_addr, size))) {
+ if (*dev->dma_mask >= DMA_BIT_MASK(32)) {
+ dev_err(dev,
+ "%s: overflow %llx+%zu of device mask %llx\n",
Please use "%pad" to format dma_addr_t ...
+ caller, (long long)dma_addr, size,
... and use &dma_addr.
+ (long long)*dev->dma_mask);
This cast is not needed, as u64 is unsigned long long in kernelspace on
all architectures.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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