diff options
| author | Christian Gromm <christian.gromm@microchip.com> | 2018-05-08 11:45:03 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-08 13:41:50 +0200 |
| commit | 3598cec585f8d54ece41edeb123ce1c97a4516d3 (patch) | |
| tree | 026a53b486adef409cf544b2f190ab2d6ed22120 /drivers/staging/most/dim2 | |
| parent | 7e6e228873945ccb46895f1f5e29187814ea1d8d (diff) | |
staging: most: make interface drivers allocate coherent memory
On arm64/aarch64 architectures the allocation of coherent memory needs a
device that has the dma_ops properly set. That's why the core module of
the MOST driver is no longer able to allocate this type or memory. This
patch moves the allocation process down to the interface drivers where
the proper devices exist (e.g. platform device or USB system software).
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/most/dim2')
| -rw-r--r-- | drivers/staging/most/dim2/dim2.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c index d15867a1ba2d..3c385b3fabec 100644 --- a/drivers/staging/most/dim2/dim2.c +++ b/drivers/staging/most/dim2/dim2.c @@ -703,6 +703,16 @@ static int poison_channel(struct most_interface *most_iface, int ch_idx) return ret; } +static void *dma_alloc(struct mbo *mbo, u32 size) +{ + return dma_alloc_coherent(NULL, size, &mbo->bus_address, GFP_KERNEL); +} + +static void dma_free(struct mbo *mbo, u32 size) +{ + dma_free_coherent(NULL, size, mbo->virt_address, mbo->bus_address); +} + /* * dim2_probe - dim2 probe handler * @pdev: platform device structure @@ -800,6 +810,8 @@ static int dim2_probe(struct platform_device *pdev) dev->most_iface.channel_vector = dev->capabilities; dev->most_iface.configure = configure_channel; dev->most_iface.enqueue = enqueue; + dev->most_iface.dma_alloc = dma_alloc; + dev->most_iface.dma_free = dma_free; dev->most_iface.poison_channel = poison_channel; dev->most_iface.request_netinfo = request_netinfo; dev->dev.init_name = "dim2_state"; |