[media] lirc: use kfifo_initialized() on lirc_buffer's fifo
We can use kfifo_initialized() to check if the fifo in lirc_buffer is
initialized or not. There's no need to have a dedicated fifo status
variable in lirc_buffer.
[m.chehab@samsung.com: add the same change to lirc_zilog, to avoid
breaking compilation of staging drivers]
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/include/media/lirc_dev.h b/include/media/lirc_dev.h
index 78f0637..05e7ad5 100644
--- a/include/media/lirc_dev.h
+++ b/include/media/lirc_dev.h
@@ -29,14 +29,13 @@
/* Using chunks instead of bytes pretends to simplify boundary checking
* And should allow for some performance fine tunning later */
struct kfifo fifo;
- u8 fifo_initialized;
};
static inline void lirc_buffer_clear(struct lirc_buffer *buf)
{
unsigned long flags;
- if (buf->fifo_initialized) {
+ if (kfifo_initialized(&buf->fifo)) {
spin_lock_irqsave(&buf->fifo_lock, flags);
kfifo_reset(&buf->fifo);
spin_unlock_irqrestore(&buf->fifo_lock, flags);
@@ -56,17 +55,14 @@
buf->chunk_size = chunk_size;
buf->size = size;
ret = kfifo_alloc(&buf->fifo, size * chunk_size, GFP_KERNEL);
- if (ret == 0)
- buf->fifo_initialized = 1;
return ret;
}
static inline void lirc_buffer_free(struct lirc_buffer *buf)
{
- if (buf->fifo_initialized) {
+ if (kfifo_initialized(&buf->fifo)) {
kfifo_free(&buf->fifo);
- buf->fifo_initialized = 0;
} else
WARN(1, "calling %s on an uninitialized lirc_buffer\n",
__func__);