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| author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2020-02-12 02:47:10 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-02-13 02:49:33 +0300 |
| commit | 23a653eb1f3f16755720dde406f137441add88d0 (patch) | |
| tree | 53771f710434f5d33dc06c45d0cba43db1cfb736 /drivers/regulator | |
| parent | c1e1fa0ae5ba99f502bd2f5a4fd34d0ea22f1fdf (diff) | |
| download | linux-23a653eb1f3f16755720dde406f137441add88d0.tar.xz | |
regulator: da9063: Replace zero-length array with flexible-array member
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertenly introduced[3] to the codebase from now on.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200211234710.GA29532@embeddedor
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/da9063-regulator.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c index aaa994293e9b..44727704d3c5 100644 --- a/drivers/regulator/da9063-regulator.c +++ b/drivers/regulator/da9063-regulator.c @@ -152,7 +152,7 @@ struct da9063_regulator { struct da9063_regulators { unsigned int n_regulators; /* Array size to be defined during init. Keep at end. */ - struct da9063_regulator regulator[0]; + struct da9063_regulator regulator[]; }; /* BUCK modes for DA9063 */ |