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| author | Anders Roxell <anders.roxell@linaro.org> | 2018-03-16 14:44:42 +0300 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2018-03-20 15:20:27 +0300 |
| commit | b5e817dcdd556da2b74c66af1cf0f44840283102 (patch) | |
| tree | e159278520aa0a7f088efcfaa13d5706fe255f9e /drivers/firmware/arm_scmi | |
| parent | c09880cef78d0ddf149cdfeb733027a806465ba2 (diff) | |
| download | linux-b5e817dcdd556da2b74c66af1cf0f44840283102.tar.xz | |
firmware: arm_scmi: prevent accessing rate_discrete uninitialized
gcc-5.3 and earlier warns that rate_discrete maybe-uninitialized
../drivers/firmware/arm_scmi/clock.c:185:5: warning: 'rate_discrete'
may be used uninitialized in this function [-Wmaybe-uninitialized]
if (rate_discrete)
^
../drivers/firmware/arm_scmi/clock.c:128:7: note:
'rate_discrete' was declared here
bool rate_discrete;
^
This patch fixing the warning by initialising rate_discrete and also using
goto label for the error path.
Fixes: 5f6c6430e904 ("firmware: arm_scmi: add initial support for clock protocol")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
[sudeep.holla: added one line description to the commit message]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/firmware/arm_scmi')
| -rw-r--r-- | drivers/firmware/arm_scmi/clock.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c index e8ffad33a0ff..e6f17825db79 100644 --- a/drivers/firmware/arm_scmi/clock.c +++ b/drivers/firmware/arm_scmi/clock.c @@ -125,7 +125,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, { u64 *rate; int ret, cnt; - bool rate_discrete; + bool rate_discrete = false; u32 tot_rate_cnt = 0, rates_flag; u16 num_returned, num_remaining; struct scmi_xfer *t; @@ -147,7 +147,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, ret = scmi_do_xfer(handle, t); if (ret) - break; + goto err; rates_flag = le32_to_cpu(rlist->num_rates_flags); num_remaining = NUM_REMAINING(rates_flag); @@ -185,6 +185,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id, if (rate_discrete) clk->list.num_rates = tot_rate_cnt; +err: scmi_one_xfer_put(handle, t); return ret; } |