Update the code to use a flexible array member instead of a pointer in
structure i2c_mux_pinctrl and use the struct_size() helper.
Also, make use of the struct_size() helper instead of an open-coded
version in order to avoid any potential type mistakes, in particular
in the context in which this code is being used.
So, replace the following form:
sizeof(*mux) + num_names * sizeof(*mux->states)
with:
struct_size(mux, states, num_names)
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
drivers/i2c/muxes/i2c-mux-pinctrl.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c
index cc6818aabab5..ff3e8c9d4dd8 100644
--- a/drivers/i2c/muxes/i2c-mux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c
@@ -27,7 +27,7 @@
struct i2c_mux_pinctrl {
struct pinctrl *pinctrl;
- struct pinctrl_state **states;
+ struct pinctrl_state *states[];
};
static int i2c_mux_pinctrl_select(struct i2c_mux_core *muxc, u32 chan)
@@ -104,14 +104,13 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev)
return PTR_ERR(parent);
muxc = i2c_mux_alloc(parent, dev, num_names,
- sizeof(*mux) + num_names * sizeof(*mux->states),
+ struct_size(mux, states, num_names),
0, i2c_mux_pinctrl_select, NULL);
if (!muxc) {
ret = -ENOMEM;
goto err_put_parent;
}
mux = i2c_mux_priv(muxc);
- mux->states = (struct pinctrl_state **)(mux + 1);
platform_set_drvdata(pdev, muxc);
--
2.21.0
