Notifying a user space application
Christian Tröster
please.see.sig at gmx.de
Thu Jul 1 22:33:54 EST 2004
Hi Stefan!
Stefan Nickl schrieb:
> On Thu, 2004-07-01 at 00:29, Christian Tröster wrote:
>>I'd like to notify a user space application if an interrupt occurs. I
>>had no
>>problems to install a custom signal handler but I am not sure what's
>>the best
>>way to notify the application.
> Mostly a stripped-down ppdev.
Thanks for posting your code. It works perfectly. I only had to change
one line adding an initialization value for the spin lock.
> /*
> * Open the device. It is single-open.
> */
> int wfi_s_count = 0;
> spinlock_t wfi_s_lock;
spinlock_t wfi_s_lock = SPIN_LOCK_UNLOCKED;
> static int wfi_open (struct inode *inode, struct file *file)
> {
> file->private_data = &wfi_global;
Bye, Christian
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