sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

arch: cxd56xx: Fix gnss poll when an event has already occurred

Browse Source 
Fix an issue that poll with timeout=0 cannot detect events that have
already occurred.
This commit is contained in:
SPRESENSE 2023-02-10 13:35:48 +09:00 committed by Xiang Xiao
parent 1877be8ce9
commit d643fb8511
1 changed files with 27 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
arch/arm/src/cxd56xx/cxd56_gnss.c
View File

@ -170,6 +170,7 @@ struct cxd56_gnss_dev_s
mutex_t ioctllock;
sem_t apiwait;
int apiret;
bool has_event;
};
/****************************************************************************
@ -2178,6 +2179,23 @@ static int cxd56_gnss_get_1pps_output(struct file *filep,
* CXD56_GNSS signal handler and utils
*/
/****************************************************************************
* Name: cxd56_gnss_pollnotify
*
* Description:
* Notify POLLIN event for poll
*
* Input Parameters:
* dev - Gnss device structure pointer
*
****************************************************************************/
static void cxd56_gnss_pollnotify(struct cxd56_gnss_dev_s *dev)
{
poll_notify(dev->fds, CONFIG_CXD56_GNSS_NPOLLWAITERS, POLLIN);
dev->has_event = true;
}
/****************************************************************************
* Name: cxd56_gnss_wait_notify
*
@ -2492,7 +2510,7 @@ static void cxd56_gnss_default_sighandler(uint32_t data, void *userdata)
return;
}
poll_notify(priv->fds, CONFIG_CXD56_GNSS_NPOLLWAITERS, POLLIN);
cxd56_gnss_pollnotify(priv);
nxmutex_unlock(&priv->devlock);
@ -3019,6 +3037,13 @@ static int cxd56_gnss_poll(struct file *filep, struct pollfd *fds,
ret = -EBUSY;
goto errout;
}
/* Should we immediately notify on any of the requested events? */
if (priv->has_event)
{
cxd56_gnss_pollnotify(priv);
}
}
else if (fds->priv)
{
@ -3030,6 +3055,7 @@ static int cxd56_gnss_poll(struct file *filep, struct pollfd *fds,
*slot = NULL;
fds->priv = NULL;
priv->has_event = false;
}
errout: