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SubjectRe: [PATCH] usb: typec: tcpm: Export partner Source Capabilities
On Thu, Jan 31, 2019 at 11:54:11AM +0800, Kyle Tso wrote:
> Provide a function to get the partner Source Capabilities.
>
> Signed-off-by: Kyle Tso <kyletso@google.com>
> ---
> drivers/usb/typec/tcpm/tcpm.c | 23 +++++++++++++++++++++++
> include/linux/usb/tcpm.h | 1 +
> 2 files changed, 24 insertions(+)
>
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index f1d3e54210df..29cd84ba9960 100644
> --- a/drivers/usb/typec/tcpm/tcpm.c
> +++ b/drivers/usb/typec/tcpm/tcpm.c
> @@ -4494,6 +4494,29 @@ int tcpm_update_sink_capabilities(struct tcpm_port *port, const u32 *pdo,
> }
> EXPORT_SYMBOL_GPL(tcpm_update_sink_capabilities);
>
> +/*
> + * Don't call this function in interrupt context. Caller needs to free the
> + * memory itself.
> + */
> +int tcpm_get_partner_src_caps(struct tcpm_port *port, u32 **src_pdo)
> +{
> + unsigned int nr_pdo;
> +
> + if (port->nr_source_caps == 0)
> + return -ENODATA;
> +
> + *src_pdo = kcalloc(port->nr_source_caps, sizeof(u32), GFP_KERNEL);
> + if (!src_pdo)
> + return -ENOMEM;
> +
> + mutex_lock(&port->lock);
> + nr_pdo = tcpm_copy_pdos(*src_pdo, port->source_caps,
> + port->nr_source_caps);
> + mutex_unlock(&port->lock);
> + return nr_pdo;
> +}
> +EXPORT_SYMBOL_GPL(tcpm_get_partner_src_caps);

We don't add new functions that no one uses :(

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