diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-09-10 12:07:10 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-09-11 09:13:33 +0200 |
| commit | f46010a1ab5182346e424af31fe8b654e8d700f4 (patch) | |
| tree | fbd7a3bedb25f9ebceb11d16f082bfc05058fea3 /include/driver.h | |
| parent | 2ee3e596c5dfc56baca440faed47bc641719d26b (diff) | |
| download | barebox-f46010a1ab5182346e424af31fe8b654e8d700f4.tar.gz barebox-f46010a1ab5182346e424af31fe8b654e8d700f4.tar.xz | |
devfs: add open counter
Add an open counter for device files so that we cannot accidently
remove an opened device. This happened with bb devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/driver.h')
| -rw-r--r-- | include/driver.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/driver.h b/include/driver.h index 68f744a942..2ee7fb1cf8 100644 --- a/include/driver.h +++ b/include/driver.h @@ -301,10 +301,11 @@ struct cdev { unsigned long offset; size_t size; unsigned int flags; + int open; }; int devfs_create(struct cdev *); -void devfs_remove(struct cdev *); +int devfs_remove(struct cdev *); struct cdev *cdev_by_name(const char *filename); ssize_t cdev_read(struct cdev *cdev, void *buf, size_t count, ulong offset, ulong flags); ssize_t cdev_write(struct cdev *cdev, const void *buf, size_t count, ulong offset, ulong flags); |