Messages in this thread Patch in this message |  | | From | Bartosz Golaszewski <> | | Date | Tue, 10 Mar 2026 16:44:15 +0100 | | Subject | [PATCH v12 01/12] dmaengine: constify struct dma_descriptor_metadata_ops |
| |
There's no reason for the instances of this struct to be modifiable. Constify the pointer in struct dma_async_tx_descriptor and all drivers currently using it.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> --- drivers/dma/ti/k3-udma.c | 2 +- drivers/dma/xilinx/xilinx_dma.c | 2 +- include/linux/dmaengine.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index c964ebfcf3b68d86e4bbc9b62bad2212f0ce3ee9..8a2f235b669aaf084a6f7b3e6b23d06b04768608 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -3408,7 +3408,7 @@ static int udma_set_metadata_len(struct dma_async_tx_descriptor *desc, return 0; } -static struct dma_descriptor_metadata_ops metadata_ops = { +static const struct dma_descriptor_metadata_ops metadata_ops = { .attach = udma_attach_metadata, .get_ptr = udma_get_metadata_ptr, .set_len = udma_set_metadata_len, diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index b53292e02448fe528f1ae9ba33b4bcf408f89fd6..97b934ca54101ea699e3ab28d419bed1b45dee4a 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -653,7 +653,7 @@ static void *xilinx_dma_get_metadata_ptr(struct dma_async_tx_descriptor *tx, return seg->hw.app; } -static struct dma_descriptor_metadata_ops xilinx_dma_metadata_ops = { +static const struct dma_descriptor_metadata_ops xilinx_dma_metadata_ops = { .get_ptr = xilinx_dma_get_metadata_ptr, }; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 99efe2b9b4ea9844ca6161208362ef18ef111d96..92566c4c100e98f48750de21249ae3b5de06c763 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -623,7 +623,7 @@ struct dma_async_tx_descriptor { void *callback_param; struct dmaengine_unmap_data *unmap; enum dma_desc_metadata_mode desc_metadata_mode; - struct dma_descriptor_metadata_ops *metadata_ops; + const struct dma_descriptor_metadata_ops *metadata_ops; #ifdef CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCH struct dma_async_tx_descriptor *next; struct dma_async_tx_descriptor *parent; -- 2.47.3
|  |