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Posted to commits@nuttx.apache.org by xi...@apache.org on 2023/01/26 02:24:14 UTC
[nuttx] 03/05: drivers/mtd/mtd_config: switch from semaphore to mutex for exclusive access
This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git
commit e3a8e1e3ef3a0da5747706efc8679a47477ae87e
Author: Petro Karashchenko <pe...@gmail.com>
AuthorDate: Wed Jan 25 22:58:40 2023 +0200
drivers/mtd/mtd_config: switch from semaphore to mutex for exclusive access
Signed-off-by: Petro Karashchenko <pe...@gmail.com>
---
drivers/mtd/mtd_config.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/mtd/mtd_config.c b/drivers/mtd/mtd_config.c
index 0da348c2fe..ac1bfde49f 100644
--- a/drivers/mtd/mtd_config.c
+++ b/drivers/mtd/mtd_config.c
@@ -42,6 +42,7 @@
#include <debug.h>
#include <nuttx/fs/fs.h>
+#include <nuttx/mutex.h>
#include <nuttx/kmalloc.h>
#include <nuttx/fs/ioctl.h>
#include <nuttx/mtd/mtd.h>
@@ -72,7 +73,7 @@
struct mtdconfig_struct_s
{
FAR struct mtd_dev_s *mtd; /* Contained MTD interface */
- sem_t exclsem; /* Supports mutual exclusion */
+ mutex_t lock; /* Supports mutual exclusion */
uint32_t blocksize; /* Size of blocks in contained MTD */
uint32_t erasesize; /* Size of erase block in contained MTD */
size_t nblocks; /* Number of blocks available */
@@ -1004,7 +1005,7 @@ errout:
* Name: mtdconfig_open
****************************************************************************/
-static int mtdconfig_open(FAR struct file *filep)
+static int mtdconfig_open(FAR struct file *filep)
{
FAR struct inode *inode = filep->f_inode;
FAR struct mtdconfig_struct_s *dev = inode->i_private;
@@ -1012,7 +1013,7 @@ static int mtdconfig_open(FAR struct file *filep)
/* Get exclusive access to the device */
- ret = nxsem_wait(&dev->exclsem);
+ ret = nxmutex_lock(&dev->lock);
if (ret < 0)
{
ferr("ERROR: nxsem_wait failed: %d\n", ret);
@@ -1036,7 +1037,7 @@ static int mtdconfig_close(FAR struct file *filep)
/* Release exclusive access to the device */
- nxsem_post(&dev->exclsem);
+ nxmutex_unlock(&dev->lock);
return OK;
}
@@ -1774,7 +1775,7 @@ int mtdconfig_register(FAR struct mtd_dev_s *mtd)
goto errout;
}
- nxsem_init(&dev->exclsem, 0, 1);
+ nxmutex_init(&dev->lock);
register_driver("/dev/config", &mtdconfig_fops, 0666, dev);
}
@@ -1806,7 +1807,7 @@ int mtdconfig_unregister(void)
inode = file.f_inode;
dev = (FAR struct mtdconfig_struct_s *)inode->i_private;
- nxsem_destroy(&dev->exclsem);
+ nxmutex_destroy(&dev->lock);
kmm_free(dev);
file_close(&file);