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Code Activity

remoteproc: sysmon: fix shutdown_acked state

Browse source 
The latest version of sysmon_stop() starts by initializing
the sysmon->shutdown_acked variable, but then overwrites it
with an uninitialized variable later:

drivers/remoteproc/qcom_sysmon.c:551:11: error: variable 'acked' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
        else if (sysmon->ept)
                 ^~~~~~~~~~~
drivers/remoteproc/qcom_sysmon.c:554:27: note: uninitialized use occurs here
        sysmon->shutdown_acked = acked;
                                 ^~~~~

Remove the local 'acked' variable again and set the state directly.

Fixes: 5c212aaf54 ("remoteproc: sysmon: Expose the shutdown result")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20201204193740.3162065-1-arnd@kernel.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Arnd Bergmann 2020-12-04 20:37:35 +01:00 • committed by Bjorn Andersson
parent c3c21b3565
commit 9d7b4a4038
1 changed files with 2 additions and 5 deletions
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7
drivers/remoteproc/qcom_sysmon.c
View file

@ -533,7 +533,6 @@ static void sysmon_stop(struct rproc_subdev *subdev, bool crashed)
.subsys_name = sysmon->name,
.ssr_event = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN
};
bool acked;
sysmon->shutdown_acked = false;
@ -547,11 +546,9 @@ static void sysmon_stop(struct rproc_subdev *subdev, bool crashed)
return;
if (sysmon->ssctl_version)
acked = ssctl_request_shutdown(sysmon);
sysmon->shutdown_acked = ssctl_request_shutdown(sysmon);
else if (sysmon->ept)
acked = sysmon_request_shutdown(sysmon);
sysmon->shutdown_acked = acked;
sysmon->shutdown_acked = sysmon_request_shutdown(sysmon);
}
static void sysmon_unprepare(struct rproc_subdev *subdev)