We can't use a static property for all the changesets, so we now create
dynamic ones for each changeset.
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Fixes: 50a5ba87690814 ("i2c: mux: demux-pinctrl: add driver")
---
Finally fixed this one!
Simon: I think you can retest your demuxer-dts-series now.
Pantelis: What happened to your series with the changeset helpers? It would
have fixed this bug, too, and would still make this code easier to read, so a
welcome addition. Also, I still haven't fully understood when it is safe to use
a static property? It would be helpful to document this. I spent quite some
time on this one because randomly broken pointers are hard to debug.
drivers/i2c/muxes/i2c-demux-pinctrl.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c
index 215ac87f606d2d..e999125ce37d77 100644
--- a/drivers/i2c/muxes/i2c-demux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c
@@ -37,8 +37,6 @@ struct i2c_demux_pinctrl_priv {
struct i2c_demux_pinctrl_chan chan[];
};
-static struct property status_okay = { .name = "status", .length = 3, .value = "ok" };
-
static int i2c_demux_master_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
{
struct i2c_demux_pinctrl_priv *priv = adap->algo_data;
@@ -192,6 +190,7 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct i2c_demux_pinctrl_priv *priv;
+ struct property *props;
int num_chan, i, j, err;
num_chan = of_count_phandle_with_args(np, "i2c-parent", NULL);
@@ -202,7 +201,10 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev)
priv = devm_kzalloc(&pdev->dev, sizeof(*priv)
+ num_chan * sizeof(struct i2c_demux_pinctrl_chan), GFP_KERNEL);
- if (!priv)
+
+ props = devm_kcalloc(&pdev->dev, num_chan, sizeof(*props), GFP_KERNEL);
+
+ if (!priv || !props)
return -ENOMEM;
err = of_property_read_string(np, "i2c-bus-name", &priv->bus_name);
@@ -220,8 +222,12 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev)
}
priv->chan[i].parent_np = adap_np;
+ props[i].name = devm_kstrdup(&pdev->dev, "status", GFP_KERNEL);
+ props[i].value = devm_kstrdup(&pdev->dev, "ok", GFP_KERNEL);
+ props[i].length = 3;
+
of_changeset_init(&priv->chan[i].chgset);
- of_changeset_update_property(&priv->chan[i].chgset, adap_np, &status_okay);
+ of_changeset_update_property(&priv->chan[i].chgset, adap_np, &props[i]);
}
priv->num_chan = num_chan;
--
2.9.3
