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Input: rmi4 - fix memory leak in rmi_set_attn_data()

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kfifo_put() returns 0 if the FIFO is full. In this case, we must
free the memory allocated for the attention data to avoid a leak.

Fixes: b908d3cd81 ("Input: synaptics-rmi4 - allow to add attention data")
Cc: stable@vger.kernel.org
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-5-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2026-05-04 21:59:35 -07:00
parent 6e752b35b6
commit a55a683a8e
1 changed files with 5 additions and 1 deletions
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6
drivers/input/rmi4/rmi_driver.c
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@ -183,7 +183,11 @@ void rmi_set_attn_data(struct rmi_device *rmi_dev, unsigned long irq_status,
attn_data.size = size;
attn_data.data = fifo_data;
kfifo_put(&drvdata->attn_fifo, attn_data);
if (!kfifo_put(&drvdata->attn_fifo, attn_data)) {
dev_warn_ratelimited(&rmi_dev->dev,
"Failed to enqueue attention data, FIFO full\n");
kfree(fifo_data);
}
}
EXPORT_SYMBOL_GPL(rmi_set_attn_data);