lkml.org 
[lkml]   [2011]   [May]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC 2/5] gpio: add support for Technologic Systems TS-5500 GPIOs
From
Date
Excerpts from Alan Cox's message of sam avr 30 06:15:36 -0400 2011:
> > + /* Enable IRQ generation */
> > + mutex_lock(&drvdata->gpio_lock);
> > + PORT_BIT_SET(0x7A, 7); /* DIO1_13 on IRQ7 */
> > + PORT_BIT_SET(0x7D, 7); /* DIO2_13 on IRQ6 */
> > + if (use_lcdio) {
> > + PORT_BIT_CLEAR(0x7D, 4); /* Enable LCD header usage as DIO */
> > + PORT_BIT_SET(0x7D, 6); /* LCD_RS on IRQ1 */
> > + }
>
> What happens if an IRQ occurs at this point, you have no handler for it ?

The IRQ is just not handled. What would be the proper way to handle
that? Would it be possible to write those registers when the IRQ is
requested?

Thanks,
Vivien.


\
 
 \ /
  Last update: 2011-05-13 23:37    [W:0.503 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site