Re: [PATCH v6 1/8] hid: new driver for PicoLCD device

Oliver Neukum
2010-04-02T08:46:43Z

Am Dienstag, 30. März 2010 22:33:50 schrieb Bruno Prémont:
> +static ssize_t picolcd_operation_mode_store(struct device *dev,
> + struct device_attribute *attr, const char *buf, size_t count)
> +{
> + struct picolcd_data *data = dev_get_drvdata(dev);
> + struct hid_report *report = NULL;
> + size_t cnt = count;
> + int timeout = 5000;
> + unsigned u;
> + unsigned long flags;
> +
> + if (cnt >= 3 && strncmp("lcd", buf, 3) == 0) {
> + if (data->status & PICOLCD_BOOTLOADER)
> + report = picolcd_out_report(REPORT_EXIT_FLASHER, data->hdev);
> + buf += 3;
> + cnt -= 3;
> + } else if (cnt >= 10 && strncmp("bootloader", buf, 10) == 0) {
> + if (!(data->status & PICOLCD_BOOTLOADER))
> + report = picolcd_out_report(REPORT_EXIT_KEYBOARD, data->hdev);
> + buf += 10;
> + cnt -= 10;
> + }
> + if (!report)
> + return -EINVAL;
> +
> + while (cnt > 0 && (*buf == ' ' || *buf == '\t')) {
> + buf++;
> + cnt--;
> + }
> + while (cnt > 0 && (buf[cnt-1] == '\n' || buf[cnt-1] == '\r'))
> + cnt--;
> + if (cnt > 0) {
> + if (sscanf(buf, "%u", &u) != 1)
> + return -EINVAL;
> + if (u > 30000)
> + return -EINVAL;
> + else
> + timeout = u;
> + }
> +
> + spin_lock_irqsave(&data->lock, flags);
> + hid_set_field(report->field[0], 0, timeout & 0xff);
> + hid_set_field(report->field[0], 1, (timeout >> 8) & 0xff);
> + usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
> + spin_unlock_irqrestore(&data->lock, flags);
> + return count;
> +}
> +
> +static DEVICE_ATTR(operation_mode, 0644, picolcd_operation_mode_show,
> + picolcd_operation_mode_store);

This violates the one file == one attribute rule.
Can you change this interface?

Regards
Oliver