diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2020-03-06 16:28:39 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-03-11 14:56:14 +0530 |
| commit | 26cf132de6f79c06025706ddc61e045d591d404d (patch) | |
| tree | 2e14e92b1976b951480ba3f095ffe972b577d46d /drivers/dma/dmaengine.h | |
| parent | db8d9b4c9b303ede7e5b0d828ec8f7ae0d26d7ef (diff) | |
dmaengine: Create debug directories for DMA devices
Create a placeholder directory for each registered DMA device.
DMA drivers can use the dmaengine_get_debugfs_root() call to get their
debugfs root and can populate with custom files to aim debugging.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200306142839.17910-4-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/dmaengine.h')
| -rw-r--r-- | drivers/dma/dmaengine.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/dma/dmaengine.h b/drivers/dma/dmaengine.h index e8a320c9e57c..1bfbd64b1371 100644 --- a/drivers/dma/dmaengine.h +++ b/drivers/dma/dmaengine.h @@ -182,4 +182,20 @@ dmaengine_desc_callback_valid(struct dmaengine_desc_callback *cb) struct dma_chan *dma_get_slave_channel(struct dma_chan *chan); struct dma_chan *dma_get_any_slave_channel(struct dma_device *device); +#ifdef CONFIG_DEBUG_FS +#include <linux/debugfs.h> + +static inline struct dentry * +dmaengine_get_debugfs_root(struct dma_device *dma_dev) { + return dma_dev->dbg_dev_root; +} +#else +struct dentry; +static inline struct dentry * +dmaengine_get_debugfs_root(struct dma_device *dma_dev) +{ + return NULL; +} +#endif /* CONFIG_DEBUG_FS */ + #endif |