On Mon, Sep 28, 2020 at 05:42:42PM +0200, Ahmad Fatoum wrote:
> dev->id_entry is not populated for devices probed from the device
> tree. It was used unconditionally however. Use device_get_match_data
> instead to support device tree probing.
>
> Signed-off-by: Ahmad Fatoum <[email protected]>
> ---
> drivers/led/led-pca955x.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/led/led-pca955x.c b/drivers/led/led-pca955x.c
> index 27fefce8d524..f89fcbfba5ac 100644
> --- a/drivers/led/led-pca955x.c
> +++ b/drivers/led/led-pca955x.c
> @@ -349,8 +349,11 @@ static int led_pca955x_probe(struct device_d *dev)
> struct i2c_client *client;
> int err;
> struct pca955x_platform_data *pdata;
> + enum pca955x_type type;
>
> - chip = &pca955x_chipdefs[dev->id_entry->driver_data];
> + type = (enum pca955x_type)device_get_match_data(dev);
In this driver we have this:
static struct pca955x_chipdef pca955x_chipdefs[] = {
[pca9550] = {
.bits = 2,
.slv_addr = /* 110000x */ 0x60,
.slv_addr_shift = 1,
},
[pca9551] = {
.bits = 8,
.slv_addr = /* 1100xxx */ 0x60,
.slv_addr_shift = 3,
},
[pca9552] = {
.bits = 16,
.slv_addr = /* 1100xxx */ 0x60,
.slv_addr_shift = 3,
},
[pca9553] = {
.bits = 4,
.slv_addr = /* 110001x */ 0x62,
.slv_addr_shift = 1,
},
};
So instead of putting the enum casted to void pointer into the matchdata
we could put pointers to struct pca955x_chipdef directly into the
matchdata.
Sascha
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