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SubjectRe: [PATCH v2] interconnect: Check for valid path in icc_set_bw()
On Mon 06 Jan 09:27 PST 2020, Georgi Djakov wrote:

> Use IS_ERR() to ensure that the path passed to icc_set_bw() is valid.
>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
> ---
> v2:
> - Use WARN_ON() instead of pr_err() (Bjorn)
>
> drivers/interconnect/core.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
> index 63c164264b73..d2ba5ae7d25b 100644
> --- a/drivers/interconnect/core.c
> +++ b/drivers/interconnect/core.c
> @@ -495,9 +495,12 @@ int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw)
> size_t i;
> int ret;
>
> - if (!path || !path->num_nodes)
> + if (!path)
> return 0;
>
> + if (WARN_ON(IS_ERR(path) || !path->num_nodes))
> + return -EINVAL;
> +
> mutex_lock(&icc_lock);
>
> old_avg = path->reqs[0].avg_bw;

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