diff options
| author | Miaoqian Lin <linmq006@gmail.com> | 2025-09-02 17:03:58 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2025-09-02 15:01:51 +0530 |
| commit | aa2e1e4563d3ab689ffa86ca1412ecbf9fd3b308 (patch) | |
| tree | 077da84caaa85311a631bdf13529fc6da9cbe426 | |
| parent | e63419dbf2ceb083c1651852209c7f048089ac0f (diff) | |
dmaengine: dw: dmamux: Fix device reference leak in rzn1_dmamux_route_allocate
The reference taken by of_find_device_by_node()
must be released when not needed anymore.
Add missing put_device() call to fix device reference leaks.
Fixes: 134d9c52fca2 ("dmaengine: dw: dmamux: Introduce RZN1 DMA router support")
Cc: stable@vger.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20250902090358.2423285-1-linmq006@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/dw/rzn1-dmamux.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/dma/dw/rzn1-dmamux.c b/drivers/dma/dw/rzn1-dmamux.c index 4fb8508419db..deadf135681b 100644 --- a/drivers/dma/dw/rzn1-dmamux.c +++ b/drivers/dma/dw/rzn1-dmamux.c @@ -48,12 +48,16 @@ static void *rzn1_dmamux_route_allocate(struct of_phandle_args *dma_spec, u32 mask; int ret; - if (dma_spec->args_count != RNZ1_DMAMUX_NCELLS) - return ERR_PTR(-EINVAL); + if (dma_spec->args_count != RNZ1_DMAMUX_NCELLS) { + ret = -EINVAL; + goto put_device; + } map = kzalloc(sizeof(*map), GFP_KERNEL); - if (!map) - return ERR_PTR(-ENOMEM); + if (!map) { + ret = -ENOMEM; + goto put_device; + } chan = dma_spec->args[0]; map->req_idx = dma_spec->args[4]; @@ -94,12 +98,15 @@ static void *rzn1_dmamux_route_allocate(struct of_phandle_args *dma_spec, if (ret) goto clear_bitmap; + put_device(&pdev->dev); return map; clear_bitmap: clear_bit(map->req_idx, dmamux->used_chans); free_map: kfree(map); +put_device: + put_device(&pdev->dev); return ERR_PTR(ret); } |