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V4L/DVB (7856): cx18/: possible cleanups
This patch contains the following possible cleanups: - cx18-i2c.c should #include "cx18-i2c.h" for getting the prototypes of it's global functions - make the following needlessly global functions static: - cx18-fileops.c:cx18_claim_stream() - cx18-fileops.c:cx18_release_stream() - cx18-queue.c:cx18_queue_move() - remove the following unused functions: - cx18-driver.c:cx18_waitq() - cx18-queue.c:cx18_buf_copy_from_user() Signed-off-by: Adrian Bunk <bunk@kernel.org> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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3f98387efa
commit
50510993e0
7 changed files with 6 additions and 41 deletions
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@ -164,16 +164,6 @@ MODULE_LICENSE("GPL");
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MODULE_VERSION(CX18_VERSION);
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int cx18_waitq(wait_queue_head_t *waitq)
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{
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DEFINE_WAIT(wait);
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prepare_to_wait(waitq, &wait, TASK_INTERRUPTIBLE);
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schedule();
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finish_wait(waitq, &wait);
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return signal_pending(current) ? -EINTR : 0;
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}
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/* Generic utility functions */
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int cx18_msleep_timeout(unsigned int msecs, int intr)
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{
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@ -444,9 +444,6 @@ extern spinlock_t cx18_cards_lock;
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/* Return non-zero if a signal is pending */
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int cx18_msleep_timeout(unsigned int msecs, int intr);
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/* Wait on queue, returns -EINTR if interrupted */
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int cx18_waitq(wait_queue_head_t *waitq);
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/* Read Hauppauge eeprom */
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struct tveeprom; /* forward reference */
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void cx18_read_eeprom(struct cx18 *cx, struct tveeprom *tv);
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@ -39,7 +39,7 @@
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associated VBI streams are also automatically claimed.
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Possible error returns: -EBUSY if someone else has claimed
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the stream or 0 on success. */
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int cx18_claim_stream(struct cx18_open_id *id, int type)
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static int cx18_claim_stream(struct cx18_open_id *id, int type)
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{
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struct cx18 *cx = id->cx;
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struct cx18_stream *s = &cx->streams[type];
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@ -87,7 +87,7 @@ int cx18_claim_stream(struct cx18_open_id *id, int type)
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/* This function releases a previously claimed stream. It will take into
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account associated VBI streams. */
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void cx18_release_stream(struct cx18_stream *s)
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static void cx18_release_stream(struct cx18_stream *s)
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{
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struct cx18 *cx = s->cx;
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struct cx18_stream *s_vbi;
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@ -34,12 +34,3 @@ void cx18_stop_capture(struct cx18_open_id *id, int gop_end);
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void cx18_mute(struct cx18 *cx);
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void cx18_unmute(struct cx18 *cx);
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/* Utilities */
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/* Try to claim a stream for the filehandle. Return 0 on success,
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-EBUSY if stream already claimed. Once a stream is claimed, it
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remains claimed until the associated filehandle is closed. */
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int cx18_claim_stream(struct cx18_open_id *id, int type);
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/* Release a previously claimed stream. */
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void cx18_release_stream(struct cx18_stream *s);
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@ -25,6 +25,7 @@
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#include "cx18-cards.h"
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#include "cx18-gpio.h"
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#include "cx18-av-core.h"
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#include "cx18-i2c.h"
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#include <media/ir-kbd-i2c.h>
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@ -26,17 +26,6 @@
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#include "cx18-queue.h"
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#include "cx18-scb.h"
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int cx18_buf_copy_from_user(struct cx18_stream *s, struct cx18_buffer *buf,
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const char __user *src, int copybytes)
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{
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if (s->buf_size - buf->bytesused < copybytes)
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copybytes = s->buf_size - buf->bytesused;
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if (copy_from_user(buf->buf + buf->bytesused, src, copybytes))
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return -EFAULT;
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buf->bytesused += copybytes;
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return copybytes;
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}
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void cx18_buf_swap(struct cx18_buffer *buf)
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{
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int i;
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@ -159,8 +148,9 @@ static void cx18_queue_move_buf(struct cx18_stream *s, struct cx18_queue *from,
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-ENOMEM is returned if the buffers could not be obtained, 0 if all
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buffers where obtained from the 'from' list and if non-zero then
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the number of stolen buffers is returned. */
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int cx18_queue_move(struct cx18_stream *s, struct cx18_queue *from,
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struct cx18_queue *steal, struct cx18_queue *to, int needed_bytes)
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static int cx18_queue_move(struct cx18_stream *s, struct cx18_queue *from,
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struct cx18_queue *steal, struct cx18_queue *to,
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int needed_bytes)
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{
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unsigned long flags;
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int rc = 0;
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@ -39,8 +39,6 @@ static inline void cx18_buf_sync_for_device(struct cx18_stream *s,
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s->buf_size, s->dma);
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}
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int cx18_buf_copy_from_user(struct cx18_stream *s, struct cx18_buffer *buf,
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const char __user *src, int copybytes);
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void cx18_buf_swap(struct cx18_buffer *buf);
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/* cx18_queue utility functions */
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@ -48,8 +46,6 @@ void cx18_queue_init(struct cx18_queue *q);
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void cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf,
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struct cx18_queue *q);
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struct cx18_buffer *cx18_dequeue(struct cx18_stream *s, struct cx18_queue *q);
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int cx18_queue_move(struct cx18_stream *s, struct cx18_queue *from,
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struct cx18_queue *steal, struct cx18_queue *to, int needed_bytes);
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struct cx18_buffer *cx18_queue_find_buf(struct cx18_stream *s, u32 id,
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u32 bytesused);
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void cx18_flush_queues(struct cx18_stream *s);
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