From: Leo Yan <leo.yan@arm.com>
To: Jie Gan <jie.gan@oss.qualcomm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@arm.com>,
James Clark <james.clark@linaro.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Tingwei Zhang <tingwei.zhang@oss.qualcomm.com>,
coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Richard Cheng <icheng@nvidia.com>
Subject: Re: [PATCH v4] coresight: fix missing error code when trace ID is invalid
Date: Tue, 12 May 2026 16:24:02 +0100 [thread overview]
Message-ID: <20260512152402.GB34802@e132581.arm.com> (raw)
In-Reply-To: <20260512-fix-trace-id-error-v4-1-eb3de789767a@oss.qualcomm.com>
On Tue, May 12, 2026 at 09:56:07AM +0800, Jie Gan wrote:
> When coresight_path_assign_trace_id() cannot assign a valid trace ID,
> coresight_enable_sysfs() takes the err_path goto with ret still 0,
> returning success to the caller despite no trace session being started.
>
> Change coresight_path_assign_trace_id() to return int, moving the
> IS_VALID_CS_TRACE_ID() check inside it so it returns -EINVAL on failure
> and 0 on success. Update both callers to propagate this return value
> directly instead of inspecting path->trace_id after the call.
>
> Fixes: d87d76d823d1 ("Coresight: Allocate trace ID after building the path")
> Reviewed-by: James Clark <james.clark@linaro.org>
> Reviewed-by: Richard Cheng <icheng@nvidia.com>
> Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
next prev parent reply other threads:[~2026-05-12 15:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 1:56 [PATCH v4] coresight: fix missing error code when trace ID is invalid Jie Gan
2026-05-12 15:24 ` Leo Yan [this message]
2026-05-12 15:40 ` Suzuki K Poulose
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