diff options
| -rw-r--r-- | include/linux/iio/iio.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 56161e02f002..5ed03e36178f 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -10,6 +10,7 @@ #include <linux/device.h> #include <linux/cdev.h> #include <linux/cleanup.h> +#include <linux/compiler_types.h> #include <linux/slab.h> #include <linux/iio/types.h> /* IIO TODO LIST */ @@ -663,6 +664,31 @@ int iio_device_claim_direct_mode(struct iio_dev *indio_dev); void iio_device_release_direct_mode(struct iio_dev *indio_dev); /* + * Helper functions that allow claim and release of direct mode + * in a fashion that doesn't generate many false positives from sparse. + * Note this must remain static inline in the header so that sparse + * can see the __acquire() marking. Revisit when sparse supports + * __cond_acquires() + */ +static inline bool iio_device_claim_direct(struct iio_dev *indio_dev) +{ + int ret = iio_device_claim_direct_mode(indio_dev); + + if (ret) + return false; + + __acquire(iio_dev); + + return true; +} + +static inline void iio_device_release_direct(struct iio_dev *indio_dev) +{ + iio_device_release_direct_mode(indio_dev); + __release(indio_dev); +} + +/* * This autocleanup logic is normally used via * iio_device_claim_direct_scoped(). */ |