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authorGustavo A. R. Silva <gustavo@embeddedor.com>2020-02-12 02:47:10 +0300
committerMark Brown <broonie@kernel.org>2020-02-13 02:49:33 +0300
commit23a653eb1f3f16755720dde406f137441add88d0 (patch)
tree53771f710434f5d33dc06c45d0cba43db1cfb736 /drivers/regulator/da9063-regulator.c
parentc1e1fa0ae5ba99f502bd2f5a4fd34d0ea22f1fdf (diff)
downloadlinux-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/da9063-regulator.c')
-rw-r--r--drivers/regulator/da9063-regulator.c2
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 */