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Subject[PATCH] opp: avoid uninitialized-variable use
Date
An uninitialized pointer is passed into another function but
ignored there:

drivers/opp/core.c:875:32: error: variable 'opp' is uninitialized when used here [-Werror,-Wuninitialized]
ret = _set_opp_bw(opp_table, opp, dev, true);
^~~
drivers/opp/core.c:849:34: note: initialize the variable 'opp' to silence this warning
struct dev_pm_opp *old_opp, *opp;
^

gcc no longer warns about this, but it seems it really should,
so change the code to just pass a NULL pointer here.

See-also: 78a5255ffb6a ("Stop the ad-hoc games with -Wno-maybe-initialized")
Fixes: c57afacc9270 ("opp: Remove bandwidth votes when target_freq is zero")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/opp/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index df12c3804533..7302f2631f8d 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -872,7 +872,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
goto put_opp_table;
}

- ret = _set_opp_bw(opp_table, opp, dev, true);
+ ret = _set_opp_bw(opp_table, NULL, dev, true);
if (ret)
return ret;

--
2.26.2
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