Hi, some small comments below. On Mon, Nov 06, 2017 at 09:20:42PM -0800, Bjorn Andersson wrote: > Introduce a sample driver that register for server notifications and > spawn clients for each available test service (service 15). The spawned > clients implements the interface for encoding "ping" and "data" requests > and decode the responses from the remote. > > Signed-off-by: Bjorn Andersson <bjorn.anders...@linaro.org> > --- [...] > +/* > + * ping_pong_store() - ping_pong debugfs file write handler
The function name is ping_write now.
> + * @file: debugfs file context
> + * @user_buf: reference to the user data
> + * @count: number of bytes in @user_buf
> + * @ppos: offset in @file to write
> + *
> + * Returns @count, or negative errno on failure.
> + *
> + * This function allows user space to send out a ping_pong QMI encoded
> message
> + * to the associated remote test service and will return with the result of
> the
> + * transaction. It serves as an example of how to provide a custom response
> + * handler.
> + */
> +static ssize_t ping_write(struct file *file, const char __user *user_buf,
> + size_t count, loff_t *ppos)
The data in user_buf is completely ignored, right? Perhaps that's worth
mentioning in the doc comment.
> +{
> + struct qmi_handle *qmi = file->private_data;
> + struct test_ping_req_msg_v01 req = {0};
> + struct qmi_txn txn;
> + int ret;
> +
> + memcpy(req.ping, "ping", sizeof(req.ping));
> +
> + ret = qmi_txn_init(qmi, &txn, NULL, NULL);
> + if (ret < 0)
> + return ret;
> +
> + ret = qmi_send_request(qmi, NULL, &txn,
> + TEST_PING_REQ_MSG_ID_V01,
> + TEST_PING_REQ_MAX_MSG_LEN_V01,
> + test_ping_req_msg_v01_ei, &req);
> + if (ret < 0) {
> + qmi_txn_cancel(&txn);
> + return ret;
> + }
> +
> + ret = qmi_txn_wait(&txn, 5 * HZ);
> + if (ret < 0)
> + count = ret;
> +
> + return count;
> +}
[...]
> +
> +/*
> + * data_store() - data debugfs file write handler
data_write
> + * @file: debugfs file context
> + * @user_buf: reference to the user data
> + * @count: number of bytes in @user_buf
> + * @ppos: offset in @file to write
> + *
> + * Returns @count, or negative errno on failure.
> + *
> + * This function allows user space to send out a data QMI encoded message to
> + * the associated remote test service and will return with the result of the
> + * transaction. It serves as an example of how to have the QMI helpers
> decode a
> + * transaction response into a provided object automatically.
> + */
> +static ssize_t data_write(struct file *file, const char __user *user_buf,
> + size_t count, loff_t *ppos)
Jonathan Neuschäfer
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