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| author | Herve Codina <[email protected]> | 2023-10-20 15:30:12 +0000 |
|---|---|---|
| committer | Wolfram Sang <[email protected]> | 2023-10-21 17:56:55 +0000 |
| commit | 0fb118de5003028ad092a4e66fc6d07b86c3bc94 (patch) | |
| tree | e31ad676319b895e52c05a77baae4594f8fd17cd /drivers/fpga/tests/fpga-region-test.c | |
| parent | i2c: muxes: i2c-mux-pinctrl: Use of_get_i2c_adapter_by_node() (diff) | |
| download | kernel-0fb118de5003028ad092a4e66fc6d07b86c3bc94.tar.gz kernel-0fb118de5003028ad092a4e66fc6d07b86c3bc94.zip | |
i2c: muxes: i2c-demux-pinctrl: Use of_get_i2c_adapter_by_node()
i2c-demux-pinctrl uses the pair of_find_i2c_adapter_by_node() /
i2c_put_adapter(). These pair alone is not correct to properly lock the
I2C parent adapter.
Indeed, i2c_put_adapter() decrements the module refcount while
of_find_i2c_adapter_by_node() does not increment it. This leads to an
underflow of the parent module refcount.
Use the dedicated function, of_get_i2c_adapter_by_node(), to handle
correctly the module refcount.
Fixes: 50a5ba876908 ("i2c: mux: demux-pinctrl: add driver")
Signed-off-by: Herve Codina <[email protected]>
Cc: [email protected]
Acked-by: Peter Rosin <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Diffstat (limited to 'drivers/fpga/tests/fpga-region-test.c')
0 files changed, 0 insertions, 0 deletions