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dma: remove external references to dma_supported

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Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
2015-11-09 14:58:18 -08:00
committed by Linus Torvalds
parent c56050c700
commit 0e77acef8e
4 changed files with 3 additions and 16 deletions
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2
drivers/usb/host/ehci-hcd.c
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@@ -589,7 +589,7 @@ static int ehci_run (struct usb_hcd *hcd)
* streaming mappings for I/O buffers, like pci_map_single(),
* can return segments above 4GB, if the device allows.
*
* NOTE: the dma mask is visible through dma_supported(), so
* NOTE: the dma mask is visible through dev->dma_mask, so
* drivers can pass this info along ... like NETIF_F_HIGHDMA,
* Scsi_Host.highmem_io, and so forth. It's readonly to all
* host side drivers though.