Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-05-19 20:06:24 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

drivers/sensors: sensor deadlock fix.

Browse Source 
using read-write lock to avoid deadlock

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu1
2025-01-21 22:44:34 +08:00
committed by Xiang Xiao
parent 6a8262314f
commit f9c5647813
1 changed files with 22 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/sensors/sensor_rpmsg.c
+22 -21
View File
@@ -33,6 +33,7 @@
#include <nuttx/list.h>
#include <nuttx/kmalloc.h>
#include <nuttx/mutex.h>
#include <nuttx/rwsem.h>
#include <nuttx/sensors/sensor.h>
#include <nuttx/rpmsg/rpmsg.h>
#include <nuttx/wqueue.h>
@@ -291,8 +292,8 @@ static const rpmsg_ept_cb g_sensor_rpmsg_handler[] =
static struct list_node g_devlist = LIST_INITIAL_VALUE(g_devlist);
static struct list_node g_eptlist = LIST_INITIAL_VALUE(g_eptlist);
static rmutex_t g_ept_lock = NXRMUTEX_INITIALIZER;
static rmutex_t g_dev_lock = NXRMUTEX_INITIALIZER;
static rw_semaphore_t g_ept_lock = RWSEM_INITIALIZER;
static rw_semaphore_t g_dev_lock = RWSEM_INITIALIZER;
/****************************************************************************
* Private Functions
@@ -346,14 +347,14 @@ static void sensor_rpmsg_advsub(FAR struct sensor_rpmsg_dev_s *dev,
/* Broadcast advertise/subscribe message to all ready ept */
nxrmutex_lock(&g_ept_lock);
down_read(&g_ept_lock);
list_for_every_entry(&g_eptlist, sre, struct sensor_rpmsg_ept_s,
node)
{
sensor_rpmsg_advsub_one(dev, &sre->ept, command);
}
nxrmutex_unlock(&g_ept_lock);
up_read(&g_ept_lock);
}
static int sensor_rpmsg_ioctl(FAR struct sensor_rpmsg_dev_s *dev,
@@ -1029,17 +1030,17 @@ sensor_rpmsg_find_dev(FAR const char *path)
{
FAR struct sensor_rpmsg_dev_s *dev;
nxrmutex_lock(&g_dev_lock);
down_read(&g_dev_lock);
list_for_every_entry(&g_devlist, dev, struct sensor_rpmsg_dev_s, node)
{
if (strcmp(dev->path, path) == 0)
{
nxrmutex_unlock(&g_dev_lock);
up_read(&g_dev_lock);
return dev;
}
}
nxrmutex_unlock(&g_dev_lock);
up_read(&g_dev_lock);
return NULL;
}
@@ -1360,13 +1361,13 @@ static void sensor_rpmsg_device_ns_bound(FAR struct rpmsg_endpoint *ept)
sre = container_of(ept, struct sensor_rpmsg_ept_s, ept);
nxrmutex_lock(&g_ept_lock);
down_write(&g_ept_lock);
list_add_tail(&g_eptlist, &sre->node);
nxrmutex_unlock(&g_ept_lock);
up_write(&g_ept_lock);
/* Broadcast all device to ready ept */
nxrmutex_lock(&g_dev_lock);
down_read(&g_dev_lock);
list_for_every_entry(&g_devlist, dev,
struct sensor_rpmsg_dev_s, node)
{
@@ -1384,7 +1385,7 @@ static void sensor_rpmsg_device_ns_bound(FAR struct rpmsg_endpoint *ept)
sensor_rpmsg_unlock(dev);
}
nxrmutex_unlock(&g_dev_lock);
up_read(&g_dev_lock);
}
static void sensor_rpmsg_ept_release(FAR struct rpmsg_endpoint *ept)
@@ -1400,7 +1401,7 @@ static void sensor_rpmsg_ept_release(FAR struct rpmsg_endpoint *ept)
* destroyed.
*/
nxrmutex_lock(&g_dev_lock);
down_read(&g_dev_lock);
list_for_every_entry(&g_devlist, dev,
struct sensor_rpmsg_dev_s, node)
{
@@ -1428,15 +1429,15 @@ static void sensor_rpmsg_ept_release(FAR struct rpmsg_endpoint *ept)
sensor_rpmsg_unlock(dev);
}
nxrmutex_unlock(&g_dev_lock);
up_read(&g_dev_lock);
nxrmutex_lock(&g_ept_lock);
down_write(&g_ept_lock);
if (list_in_list(&sre->node))
{
list_delete(&sre->node);
}
nxrmutex_unlock(&g_ept_lock);
up_write(&g_ept_lock);
nxrmutex_destroy(&sre->lock);
kmm_free(sre);
@@ -1527,19 +1528,19 @@ sensor_rpmsg_register(FAR struct sensor_lowerhalf_s *lower,
/* If openamp is ready, send advertisement to remote proc */
nxrmutex_lock(&g_dev_lock);
down_write(&g_dev_lock);
list_add_tail(&g_devlist, &dev->node);
nxrmutex_unlock(&g_dev_lock);
up_write(&g_dev_lock);
if (lower->ops->activate)
{
nxrmutex_lock(&g_ept_lock);
down_read(&g_ept_lock);
list_for_every_entry(&g_eptlist, sre, struct sensor_rpmsg_ept_s,
node)
{
sensor_rpmsg_advsub_one(dev, &sre->ept, SENSOR_RPMSG_ADVERTISE);
}
nxrmutex_unlock(&g_ept_lock);
up_read(&g_ept_lock);
}
return &dev->lower;
@@ -1566,9 +1567,9 @@ void sensor_rpmsg_unregister(FAR struct sensor_lowerhalf_s *lower)
return;
}
nxrmutex_lock(&g_dev_lock);
down_write(&g_dev_lock);
list_delete(&dev->node);
nxrmutex_unlock(&g_dev_lock);
up_write(&g_dev_lock);
nxsem_destroy(&dev->proxysem);
kmm_free(dev);