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iio: buffer: hw-consumer: free scan_mask on buffer release

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The scan_mask lifetime changed in commit 9a2e1233d3 ("iio: buffer:
hw-consumer: remove redundant scan_mask flexible array").

Before that change, the scan mask storage was embedded in struct
hw_consumer_buffer, so iio_hw_buf_release() could free the whole
allocation with a single kfree(hw_buf).

That commit moved the scan mask to a separate bitmap_zalloc() allocation
stored in buffer.scan_mask, but left iio_hw_buf_release() unchanged.

Free the scan mask in iio_hw_buf_release() before freeing the buffer
wrapper.

Fixes: 9a2e1233d3 ("iio: buffer: hw-consumer: remove redundant scan_mask flexible array")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Felix Gu 2026-04-27 19:11:39 +08:00 committed by Jonathan Cameron
parent 5a9c90350b
commit 6325d6e220
1 changed files with 2 additions and 0 deletions
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2
drivers/iio/buffer/industrialio-hw-consumer.c
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@ -40,6 +40,8 @@ static void iio_hw_buf_release(struct iio_buffer *buffer)
{
struct hw_consumer_buffer *hw_buf =
iio_buffer_to_hw_consumer_buffer(buffer);
bitmap_free(buffer->scan_mask);
kfree(hw_buf);
}