diff options
| author | Amelie Delaunay <amelie.delaunay@foss.st.com> | 2024-05-31 17:07:10 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-06-11 23:55:34 +0530 |
| commit | 10b8e0fd3f7234a38db2c8d2c8dec0bd6eeede44 (patch) | |
| tree | 96b498417be2f0ce25c1a1030b0ba20da2115713 /drivers/dma/dmaengine.c | |
| parent | 2088473802ab9641114681bee92ba902bccdc19b (diff) | |
dmaengine: add channel device name to channel registration
Channel device name is used for sysfs, but also by dmatest filter function.
With dynamic channel registration, channels can be registered after dma
controller registration. Users may want to have specific channel names.
If name is NULL, the channel name relies on previous implementation,
dma<controller_device_id>chan<channel_device_id>.
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20240531150712.2503554-11-amelie.delaunay@foss.st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/dmaengine.c')
| -rw-r--r-- | drivers/dma/dmaengine.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 491b22240221..c380a4dda77a 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -1037,7 +1037,8 @@ static int get_dma_id(struct dma_device *device) } static int __dma_async_device_channel_register(struct dma_device *device, - struct dma_chan *chan) + struct dma_chan *chan, + const char *name) { int rc; @@ -1066,8 +1067,10 @@ static int __dma_async_device_channel_register(struct dma_device *device, chan->dev->device.parent = device->dev; chan->dev->chan = chan; chan->dev->dev_id = device->dev_id; - dev_set_name(&chan->dev->device, "dma%dchan%d", - device->dev_id, chan->chan_id); + if (!name) + dev_set_name(&chan->dev->device, "dma%dchan%d", device->dev_id, chan->chan_id); + else + dev_set_name(&chan->dev->device, name); rc = device_register(&chan->dev->device); if (rc) goto err_out_ida; @@ -1087,11 +1090,12 @@ static int __dma_async_device_channel_register(struct dma_device *device, } int dma_async_device_channel_register(struct dma_device *device, - struct dma_chan *chan) + struct dma_chan *chan, + const char *name) { int rc; - rc = __dma_async_device_channel_register(device, chan); + rc = __dma_async_device_channel_register(device, chan, name); if (rc < 0) return rc; @@ -1203,7 +1207,7 @@ int dma_async_device_register(struct dma_device *device) /* represent channels in sysfs. Probably want devs too */ list_for_each_entry(chan, &device->channels, device_node) { - rc = __dma_async_device_channel_register(device, chan); + rc = __dma_async_device_channel_register(device, chan, NULL); if (rc < 0) goto err_out; } |