Hi,
On Thursday 21 July 2005 00:24, Pavel Machek wrote:
>
> +config TOUCHSCREEN_COLLIE
> + tristate "Collie touchscreen (for Sharp SL-5500)"
> + depends on MCP_UCB1200 && INPUT
I don't think you need && INPUT here.
>
> obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o
> obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o
> +obj-$(CONFIG_TOUCHSCREEN_COLLIE)+= collie_ts.o
A tab would be nice.
> +
> +/*
> + * This is a RT kernel thread that handles the ADC accesses
> + * (mainly so we can use semaphores in the UCB1200 core code
> + * to serialise accesses to the ADC). The UCB1400 access
> + * functions are expected to be able to sleep as well.
> + */
> +static int ucb1x00_thread(void *_ts)
> +{
> + struct ucb1x00_ts *ts = _ts;
> + struct task_struct *tsk = current;
> + int valid;
> +
> + ts->rtask = tsk;
> +
> + daemonize("ktsd");
> + /* only want to receive SIGKILL */
> + allow_signal(SIGKILL);
> +
This should be converted to kthread interface.
> +static int ucb1x00_ts_open(struct input_dev *idev)
> +{
> + struct ucb1x00_ts *ts = (struct ucb1x00_ts *)idev;
> + int ret = 0;
> +
> + if (down_interruptible(&ts->sem))
> + return -EINTR;
> +
> + if (ts->use_count++ != 0)
> + goto out;
> +
Please kill both ts->sem and ts->use_count - input core already serializes
input_open and input_close.
> + if (ts->rtask)
> + panic("ucb1x00: rtask running?");
> +
> + sema_init(&ts->irq_wait, 0);
> + ret = ucb1x00_hook_irq(ts->ucb, UCB_IRQ_TSPX, ucb1x00_ts_irq, ts);
> + if (ret < 0)
> + goto out;
> +
> + /*
> + * If we do this at all, we should allow the user to
> + * measure and read the X and Y resistance at any time.
> + */
> + ucb1x00_adc_enable(ts->ucb);
> + ts->x_res = ucb1x00_ts_read_xres(ts);
> + ts->y_res = ucb1x00_ts_read_yres(ts);
> + ucb1x00_adc_disable(ts->ucb);
> +
> + init_completion(&ts->init_exit);
> + ret = kernel_thread(ucb1x00_thread, ts, CLONE_KERNEL);
> + if (ret >= 0) {
> + wait_for_completion(&ts->init_exit);
> + ret = 0;
> + } else {
> + ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
> + }
kthread_run(ucb1x00_thread, ts, "ktsd")...
> +
> +MODULE_PARM(adcsync, "i");
> +MODULE_PARM_DESC(adcsync, "Enable use of ADCSYNC signal");
Die, MODULE_PARM, die!
--
Dmitry
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