It's a common pattern to get an aiochannel by name and the value
afterwards. Add a helper for this pattern.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
drivers/aiodev/core.c | 12 ++++++++++++
include/aiodev.h | 9 +++++++++
2 files changed, 21 insertions(+)
diff --git a/drivers/aiodev/core.c b/drivers/aiodev/core.c
index 1fbb7b9188..5bdc4d83d4 100644
--- a/drivers/aiodev/core.c
+++ b/drivers/aiodev/core.c
@@ -73,6 +73,18 @@ int aiochannel_get_value(struct aiochannel *aiochan, int *value)
}
EXPORT_SYMBOL(aiochannel_get_value);
+int aiochannel_name_get_value(const char *chname, int *value)
+{
+ struct aiochannel *aio;
+
+ aio = aiochannel_by_name(chname);
+ if (IS_ERR(aio))
+ return PTR_ERR(aio);
+
+ return aiochannel_get_value(aio, value);
+}
+EXPORT_SYMBOL(aiochannel_name_get_value);
+
int aiochannel_get_index(struct aiochannel *aiochan)
{
return aiochan->index;
diff --git a/include/aiodev.h b/include/aiodev.h
index 56bd2da9f5..fb0807ad42 100644
--- a/include/aiodev.h
+++ b/include/aiodev.h
@@ -47,4 +47,13 @@ static inline const char *aiochannel_get_unit(struct aiochannel *aiochan)
extern struct list_head aiodevices;
#define for_each_aiodevice(aiodevice) list_for_each_entry(aiodevice, &aiodevices, list)
+#ifdef CONFIG_AIODEV
+int aiochannel_name_get_value(const char *chname, int *value);
+#else
+static inline int aiochannel_name_get_value(const char *chname, int *value)
+{
+ return -EOPNOTSUPP;
+}
+#endif
+
#endif
--
2.39.2
