I'm sorry for sending the error ping message.
The related patch has fixed the issue by changing the ocores_i2c_of_probe function to use devm_clk_get_optional_enabled().
This new patch only requires a minor modification, and there is no need to add a check for clk_disable_unprepare
as it already has checks for error pointers and NULL values.
Best regards,
Wang Zhang
"Wang Zhang" <silver_code@xxxxxxxxxxx>写道：
> Smatch Warns:
> drivers/i2c/busses/i2c-ocores.c:701 ocores_i2c_probe() warn:
> missing unwind goto?
>
> The error handling code after the err_clk label should be executed to
> release any resources that were allocated for the clock if a negative
> error code returned after platform_get_irq_optional.
>
> Fix this by changing the direct return to `goto err_clk`.
>
> Signed-off-by: Wang Zhang <silver_code@xxxxxxxxxxx>
> ---
> v2->v3: the first patch had issues. Just do a much simpler fix. No need
> to add the check. clk_disable_unprepare() has checks for error pointer
> and NULL already.
> v1->v2: change `ocores_i2c_of_probe` to use `devm_clk_get_enabled()`
> ---
> This patch was found by static analyzer.
> ...
> drivers/i2c/busses/i2c-ocores.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
> index 2e575856c5cd..1df1439218c9 100644
> --- a/drivers/i2c/busses/i2c-ocores.c
> +++ b/drivers/i2c/busses/i2c-ocores.c
> @@ -700,8 +700,10 @@ static int ocores_i2c_probe(struct platform_device *pdev)
> if (irq == -ENXIO) {
> ocores_algorithm.master_xfer = ocores_xfer_polling;
> } else {
> - if (irq < 0)
> - return irq;
> + if (irq < 0) {
> + ret = irq;
> + goto err_clk;
> + }
> }
>
> if (ocores_algorithm.master_xfer != ocores_xfer_polling) {
> --
> 2.34.1
