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| author | Stefani Seibold <stefani@seibold.net> | 2013-11-14 14:32:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-15 09:32:23 +0900 |
| commit | 498d319bb512992ef0784c278fa03679f2f5649d (patch) | |
| tree | 2793b41c3a98b858d24aa833ccc2bfb2f6d60974 /drivers/iio | |
| parent | a019e48cfbfb358786326db3dbc1c565b8f14a56 (diff) | |
| download | linux-498d319bb512992ef0784c278fa03679f2f5649d.tar.bz2 | |
kfifo API type safety
This patch enhances the type safety for the kfifo API. It is now safe
to put const data into a non const FIFO and the API will now generate a
compiler warning when reading from the fifo where the destination
address is pointing to a const variable.
As a side effect the kfifo_put() does now expect the value of an element
instead a pointer to the element. This was suggested Russell King. It
make the handling of the kfifo_put easier since there is no need to
create a helper variable for getting the address of a pointer or to pass
integers of different sizes.
IMHO the API break is okay, since there are currently only six users of
kfifo_put().
The code is also cleaner by kicking out the "if (0)" expressions.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/industrialio-event.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c index dac15b9f9df8..c10eab64bc05 100644 --- a/drivers/iio/industrialio-event.c +++ b/drivers/iio/industrialio-event.c @@ -56,7 +56,7 @@ int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp) ev.id = ev_code; ev.timestamp = timestamp; - copied = kfifo_put(&ev_int->det_events, &ev); + copied = kfifo_put(&ev_int->det_events, ev); if (copied != 0) wake_up_locked_poll(&ev_int->wait, POLLIN); } |