diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-08-16 08:24:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-22 09:41:55 -0700 |
| commit | cdfee5623290bc893f595636b44fa28e8207c5b3 (patch) | |
| tree | a768872b88b20932895fcc1d82704dda4eb56924 /include | |
| parent | bd5defaee872da9b81e3c72045eb6794445cd2e6 (diff) | |
driver core: initialize a default DMA mask for platform device
We still treat devices without a DMA mask as defaulting to 32-bits for
both mask, but a few releases ago we've started warning about such
cases, as they require special cases to work around this sloppyness.
Add a dma_mask field to struct platform_device so that we can initialize
the dma_mask pointer in struct device and initialize both masks to
32-bits by default, replacing similar functionality in m68k and
powerpc. The arch_setup_pdev_archdata hooks is now unused and removed.
Note that the code looks a little odd with the various conditionals
because we have to support platform_device structures that are
statically allocated.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20190816062435.881-7-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/platform_device.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 9bc36b589827..34a3d8ed8ba7 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -24,6 +24,7 @@ struct platform_device { int id; bool id_auto; struct device dev; + u64 dma_mask; u32 num_resources; struct resource *resource; @@ -48,7 +49,6 @@ extern void platform_device_unregister(struct platform_device *); extern struct bus_type platform_bus_type; extern struct device platform_bus; -extern void arch_setup_pdev_archdata(struct platform_device *); extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int); extern void __iomem * |