Re: [PATCH v5 12/15] media: i2c: rdacm20: Embed 'serializer' field

From: Hans Verkuil
Date: Thu Jun 17 2021 - 02:18:57 EST


On 17/06/2021 02:14, Laurent Pinchart wrote:
> Hi Jacopo,
>
> Thank you for the patch.
>
> This should be moved before 11/15 to avoid a bisection breakage (or
> 11/15 should be fixed, and this patch updated accordingly).

Good catch!

Jacopo, I dropped the PR I made. It you just want to swap patch 11 and 12,
then I can do that, if you want more extensive changes, then I need a v6.

Let me know what you want.

Hans

>
> On Wed, Jun 16, 2021 at 02:46:13PM +0200, Jacopo Mondi wrote:
>> There's no reason to allocate dynamically the 'serializer' field in
>> the driver structure.
>>
>> Embed the field and adjust all its users in the driver.
>>
>> Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
>> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
>> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
>> ---
>> drivers/media/i2c/rdacm20.c | 36 +++++++++++++++---------------------
>> 1 file changed, 15 insertions(+), 21 deletions(-)
>>
>> diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c
>> index 5e0314a2b1ca..029af8fd7485 100644
>> --- a/drivers/media/i2c/rdacm20.c
>> +++ b/drivers/media/i2c/rdacm20.c
>> @@ -312,7 +312,7 @@ static const struct ov10635_reg {
>>
>> struct rdacm20_device {
>> struct device *dev;
>> - struct max9271_device *serializer;
>> + struct max9271_device serializer;
>> struct i2c_client *sensor;
>> struct v4l2_subdev sd;
>> struct media_pad pad;
>> @@ -399,7 +399,7 @@ static int rdacm20_s_stream(struct v4l2_subdev *sd, int enable)
>> {
>> struct rdacm20_device *dev = sd_to_rdacm20(sd);
>>
>> - return max9271_set_serial_link(dev->serializer, enable);
>> + return max9271_set_serial_link(&dev->serializer, enable);
>> }
>>
>> static int rdacm20_enum_mbus_code(struct v4l2_subdev *sd,
>> @@ -455,10 +455,10 @@ static int rdacm20_initialize(struct rdacm20_device *dev)
>> unsigned int retry = 3;
>> int ret;
>>
>> - max9271_wake_up(dev->serializer);
>> + max9271_wake_up(&dev->serializer);
>>
>> /* Serial link disabled during config as it needs a valid pixel clock. */
>> - ret = max9271_set_serial_link(dev->serializer, false);
>> + ret = max9271_set_serial_link(&dev->serializer, false);
>> if (ret)
>> return ret;
>>
>> @@ -466,35 +466,35 @@ static int rdacm20_initialize(struct rdacm20_device *dev)
>> * Ensure that we have a good link configuration before attempting to
>> * identify the device.
>> */
>> - max9271_configure_i2c(dev->serializer, MAX9271_I2CSLVSH_469NS_234NS |
>> - MAX9271_I2CSLVTO_1024US |
>> - MAX9271_I2CMSTBT_105KBPS);
>> + max9271_configure_i2c(&dev->serializer, MAX9271_I2CSLVSH_469NS_234NS |
>> + MAX9271_I2CSLVTO_1024US |
>> + MAX9271_I2CMSTBT_105KBPS);
>>
>> - max9271_configure_gmsl_link(dev->serializer);
>> + max9271_configure_gmsl_link(&dev->serializer);
>>
>> - ret = max9271_verify_id(dev->serializer);
>> + ret = max9271_verify_id(&dev->serializer);
>> if (ret < 0)
>> return ret;
>>
>> - ret = max9271_set_address(dev->serializer, dev->addrs[0]);
>> + ret = max9271_set_address(&dev->serializer, dev->addrs[0]);
>> if (ret < 0)
>> return ret;
>> - dev->serializer->client->addr = dev->addrs[0];
>> + dev->serializer.client->addr = dev->addrs[0];
>>
>> /*
>> * Reset the sensor by cycling the OV10635 reset signal connected to the
>> * MAX9271 GPIO1 and verify communication with the OV10635.
>> */
>> - ret = max9271_enable_gpios(dev->serializer, MAX9271_GPIO1OUT);
>> + ret = max9271_enable_gpios(&dev->serializer, MAX9271_GPIO1OUT);
>> if (ret)
>> return ret;
>>
>> - ret = max9271_clear_gpios(dev->serializer, MAX9271_GPIO1OUT);
>> + ret = max9271_clear_gpios(&dev->serializer, MAX9271_GPIO1OUT);
>> if (ret)
>> return ret;
>> usleep_range(10000, 15000);
>>
>> - ret = max9271_set_gpios(dev->serializer, MAX9271_GPIO1OUT);
>> + ret = max9271_set_gpios(&dev->serializer, MAX9271_GPIO1OUT);
>> if (ret)
>> return ret;
>> usleep_range(10000, 15000);
>> @@ -564,13 +564,7 @@ static int rdacm20_probe(struct i2c_client *client)
>> if (!dev)
>> return -ENOMEM;
>> dev->dev = &client->dev;
>> -
>> - dev->serializer = devm_kzalloc(&client->dev, sizeof(*dev->serializer),
>> - GFP_KERNEL);
>> - if (!dev->serializer)
>> - return -ENOMEM;
>> -
>> - dev->serializer->client = client;
>> + dev->serializer.client = client;
>>
>> ret = of_property_read_u32_array(client->dev.of_node, "reg",
>> dev->addrs, 2);
>