6.6-stable review patch. If anyone has any objections, please let me know.
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From: Miaoqian Lin linmq006@gmail.com
commit aa2e1e4563d3ab689ffa86ca1412ecbf9fd3b308 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/dma/dw/rzn1-dmamux.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
--- a/drivers/dma/dw/rzn1-dmamux.c +++ b/drivers/dma/dw/rzn1-dmamux.c @@ -48,12 +48,16 @@ static void *rzn1_dmamux_route_allocate( 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( 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); }