linux-kernel - Re: [PATCH 1/1] usb: typec: ucsi

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 28 Sep 2022 17:33:27 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Wayne Chang <waynec@...dia.com>
Cc:     gregkh@...uxfoundation.org, Sanket.Goswami@....com,
        singhanc@...dia.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] usb: typec: ucsi_ccg: Add OF support

Hi,

On Wed, Sep 28, 2022 at 08:52:27PM +0800, Wayne Chang wrote:
> The change enables the device tree infrastructure support on Cypress
> cypd4226.
> 
> Signed-off-by: Wayne Chang <waynec@...dia.com>
> ---
>  drivers/usb/typec/ucsi/ucsi_ccg.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
> index 5c0bf48be766..36442508bc37 100644
> --- a/drivers/usb/typec/ucsi/ucsi_ccg.c
> +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
> @@ -631,7 +631,7 @@ static int ccg_request_irq(struct ucsi_ccg *uc)
>  {
>  	unsigned long flags = IRQF_ONESHOT;
>  
> -	if (!has_acpi_companion(uc->dev))
> +	if (!has_acpi_companion(uc->dev) && !uc->dev->of_node)

You can use:

        if (!dev_fwnode(uc->dev))

instead.

>  		flags |= IRQF_TRIGGER_HIGH;
>  
>  	return request_threaded_irq(uc->irq, NULL, ccg_irq_handler, flags, dev_name(uc->dev), uc);
> @@ -1417,6 +1417,12 @@ static int ucsi_ccg_remove(struct i2c_client *client)
>  	return 0;
>  }
>  
> +static const struct of_device_id ucsi_ccg_of_match_table[] = {
> +		{ .compatible = "cypress,cypd4226", },
> +		{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, ucsi_ccg_of_match_table);
> +
>  static const struct i2c_device_id ucsi_ccg_device_id[] = {
>  	{"ccgx-ucsi", 0},
>  	{}
> @@ -1471,6 +1477,7 @@ static struct i2c_driver ucsi_ccg_driver = {
>  		.pm = &ucsi_ccg_pm,
>  		.dev_groups = ucsi_ccg_groups,
>  		.acpi_match_table = amd_i2c_ucsi_match,
> +		.of_match_table = ucsi_ccg_of_match_table,
>  	},
>  	.probe = ucsi_ccg_probe,
>  	.remove = ucsi_ccg_remove,

thanks,

-- 
heikki