Messages in this thread | | | Date | Tue, 03 Sep 2013 15:00:51 -0500 | From | Daniel Santos <> | Subject | Re: RESEND: Generating interrupts from a USB device driver? (USB to SPI/GPIO bridge) |
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On 09/02/2013 06:07 PM, Greg KH wrote: > On Mon, Sep 02, 2013 at 05:46:58PM -0500, Daniel Santos wrote: >> Hello guys. I didn't get a response the last time so hopefully with >> 3.11 out I'll get one this time. >> >> I need to be able to generate interrupts from a USB device driver while >> servicing the complete() function of an interrupt URB. > No you don't :)
Hmm, am I wrong that if I want my gpios to be poll()-able from userspace (via /sys/class/gpio/gpio<num>/value), that I must generate an IRQ and populate my .to_irq function of gpio_chip? Or is it cleaner to find the dirent and directly call sysfs_notify_dirent() to facilitate this behavior to userspace?
Of course, this will wont enable drivers that want an irq in the kernel, but aside from this ADNS-9800, I don't need that functionality.
Thanks, Daniel
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