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| author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2020-02-12 02:46:12 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-02-13 02:54:54 +0300 |
| commit | d69f763fd360ec62dab9024f98209655f3046c68 (patch) | |
| tree | dacc33c82e68606790eb26ddde75d6f99ae035fd /drivers/regulator/da9062-regulator.c | |
| parent | 23a653eb1f3f16755720dde406f137441add88d0 (diff) | |
| download | linux-d69f763fd360ec62dab9024f98209655f3046c68.tar.xz | |
regulator: da9062: 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>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Link: https://lore.kernel.org/r/20200211234612.GA28682@embeddedor
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/da9062-regulator.c')
| -rw-r--r-- | drivers/regulator/da9062-regulator.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-regulator.c index d3ce0278bfbe..d8112f56e94e 100644 --- a/drivers/regulator/da9062-regulator.c +++ b/drivers/regulator/da9062-regulator.c @@ -73,7 +73,7 @@ struct da9062_regulators { int irq_ldo_lim; unsigned n_regulators; /* Array size to be defined during init. Keep at end. */ - struct da9062_regulator regulator[0]; + struct da9062_regulator regulator[]; }; /* Regulator operations */ |