A private data pointer in struct device_attribute allows the 'show' and 'store'
functions to access instance data. This handy in situations where the
driver_data and platform_data pointers of 'struct device' are already used
for other purposes.
Signed-off-by: Timur Tabi <[email protected]>
---
Greg, can you tell me if you think this patch is a good idea? It doesn't
appear to do any harm, and I'm working on an ALSA driver that could benefit
for this patch. I think 2.6.25 would be a good target.
include/linux/device.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux/device.h b/include/linux/device.h
index 2e15822..10708ee 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -344,6 +344,7 @@ struct device_attribute {
char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
+ void *private_data;
};
#define DEVICE_ATTR(_name,_mode,_show,_store) \
--
1.5.2.4
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