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| author | Michael Moese <michael.moese@men.de> | 2016-09-14 12:05:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-27 12:33:47 +0200 |
| commit | 2d8784df1a1c11ace4e244780facec1e945c5b4f (patch) | |
| tree | 5a29e7d2bcd98873dd13470ac492206a0b1292fa | |
| parent | mcb: Enable PCI bus mastering by default (diff) | |
| download | linux-2d8784df1a1c11ace4e244780facec1e945c5b4f.tar.xz linux-2d8784df1a1c11ace4e244780facec1e945c5b4f.zip | |
mcb: Add a dma_device to mcb_device
When performing DMA operations on a MCB device, the device needed
for using the DMA API is "mcb_device->bus_carrier".
This is rather lengthy, so a shortcut is introduced to struct mcb_device
in order to ensure the MCB device driver uses the correct device for DMA
operations.
Signed-off-by: Michael Moese <michael.moese@men.de>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mcb/mcb-core.c | 1 | ||||
| -rw-r--r-- | include/linux/mcb.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c index 5306966efc11..921a5d2a802b 100644 --- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -233,6 +233,7 @@ int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev) dev->dev.bus = &mcb_bus_type; dev->dev.parent = bus->dev.parent; dev->dev.release = mcb_release_dev; + dev->dma_dev = bus->carrier; device_id = dev->id; dev_set_name(&dev->dev, "mcb%d-16z%03d-%d:%d:%d", diff --git a/include/linux/mcb.h b/include/linux/mcb.h index ee5200d660b0..4097ac9ea13a 100644 --- a/include/linux/mcb.h +++ b/include/linux/mcb.h @@ -76,6 +76,7 @@ struct mcb_device { int rev; struct resource irq; struct resource mem; + struct device *dma_dev; }; static inline struct mcb_device *to_mcb_device(struct device *dev) |