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SubjectRe: [PATCH] Input: sparcspkr: Fix refcount leak in bbc_beep_probe
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Hi, Dmitry

On 2022/5/17 6:08, Dmitry Torokhov wrote:
> Hi
> On Mon, May 16, 2022 at 12:10:16PM +0400, Miaoqian Lin wrote:
>> of_find_node_by_path() calls of_find_node_opts_by_path(),
>> which returns a node pointer with refcount
>> incremented, we should use of_node_put() on it when done.
>> Add missing of_node_put() to avoid refcount leak.
>>
>> Fixes: 9c1a5077fdca ("input: Rewrite sparcspkr device probing.")
>> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
>> ---
> Thank you for the patch.
>
>> drivers/input/misc/sparcspkr.c | 9 ++++++---
>> 1 file changed, 6 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/input/misc/sparcspkr.c b/drivers/input/misc/sparcspkr.c
>> index fe43e5557ed7..6a86900aa1fb 100644
>> --- a/drivers/input/misc/sparcspkr.c
>> +++ b/drivers/input/misc/sparcspkr.c
>> @@ -206,11 +206,11 @@ static int bbc_beep_probe(struct platform_device *op)
>> info = &state->u.bbc;
>> info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0);
>> if (!info->clock_freq)
>> - goto out_free;
>> + goto out_put;
>>
>> info->regs = of_ioremap(&op->resource[0], 0, 6, "bbc beep");
>> if (!info->regs)
>> - goto out_free;
>> + goto out_put;
>>
>> platform_set_drvdata(op, state);
>>
>> @@ -218,11 +218,14 @@ static int bbc_beep_probe(struct platform_device *op)
>> if (err)
>> goto out_clear_drvdata;
>>
>> + of_node_put(dp);
>> +
> We do not really need to keep node pointer for that long, how about the
> version of your patch below?
Looks good to me.
> Thanks.
>

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