media: dvb-core: dvb_ringbuffer: Fix various coding style issues

The file dvb_ringbuffer.c has several minor coding style violations.
This patch resolves these issues to improve code readability and align
the code with the Linux kernel coding style.

The cleanups include:
- Adding spaces around assignment and comparison operators.
- Adding spaces after commas in function arguments.
- Placing statements on a new line for single-line 'if' blocks.
- Correcting minor indentation.

This is a purely stylistic change with no functional impact.

Signed-off-by: Darshan Rathod <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
[hverkuil: split rbuf->pread = rbuf->pwrite = 0 in two lines]

drivers/media/dvb-core/dvb_ringbuffer.c

···
 
 void dvb_ringbuffer_init(struct dvb_ringbuffer *rbuf, void *data, size_t len)
 {
-	rbuf->pread=rbuf->pwrite=0;
-	rbuf->data=data;
-	rbuf->size=len;
-	rbuf->error=0;
+	rbuf->pread = 0;
+	rbuf->pwrite = 0;
+	rbuf->data = data;
+	rbuf->size = len;
+	rbuf->error = 0;
 
 	init_waitqueue_head(&rbuf->queue);
 
···
 	return len;
 }
 
-ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8* buf, size_t len)
+ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8 *buf, size_t len)
 {
 	int status;
 	ssize_t oldpwrite = rbuf->pwrite;
···
 	DVB_RINGBUFFER_WRITE_BYTE(rbuf, PKT_READY);
 	status = dvb_ringbuffer_write(rbuf, buf, len);
 
-	if (status < 0) rbuf->pwrite = oldpwrite;
+	if (status < 0)
+		rbuf->pwrite = oldpwrite;
 	return status;
 }
 
···
 
 	pktlen = rbuf->data[idx] << 8;
 	pktlen |= rbuf->data[(idx + 1) % rbuf->size];
-	if (offset > pktlen) return -EINVAL;
-	if ((offset + len) > pktlen) len = pktlen - offset;
+	if (offset > pktlen)
+		return -EINVAL;
+	if ((offset + len) > pktlen)
+		len = pktlen - offset;
 
 	idx = (idx + DVB_RINGBUFFER_PKTHDRSIZE + offset) % rbuf->size;
 	todo = len;
···
 }
 
 ssize_t dvb_ringbuffer_pkt_read(struct dvb_ringbuffer *rbuf, size_t idx,
-				int offset, u8* buf, size_t len)
+				int offset, u8 *buf, size_t len)
 {
 	size_t todo;
 	size_t split;
···
 
 	pktlen = rbuf->data[idx] << 8;
 	pktlen |= rbuf->data[(idx + 1) % rbuf->size];
-	if (offset > pktlen) return -EINVAL;
-	if ((offset + len) > pktlen) len = pktlen - offset;
+	if (offset > pktlen)
+		return -EINVAL;
+	if ((offset + len) > pktlen)
+		len = pktlen - offset;
 
 	idx = (idx + DVB_RINGBUFFER_PKTHDRSIZE + offset) % rbuf->size;
 	todo = len;
···
 	rbuf->data[(idx + 2) % rbuf->size] = PKT_DISPOSED;
 
 	// clean up disposed packets
-	while(dvb_ringbuffer_avail(rbuf) > DVB_RINGBUFFER_PKTHDRSIZE) {
+	while (dvb_ringbuffer_avail(rbuf) > DVB_RINGBUFFER_PKTHDRSIZE) {
 		if (DVB_RINGBUFFER_PEEK(rbuf, 2) == PKT_DISPOSED) {
 			pktlen = DVB_RINGBUFFER_PEEK(rbuf, 0) << 8;
 			pktlen |= DVB_RINGBUFFER_PEEK(rbuf, 1);
···
 	}
 }
 
-ssize_t dvb_ringbuffer_pkt_next(struct dvb_ringbuffer *rbuf, size_t idx, size_t* pktlen)
+ssize_t dvb_ringbuffer_pkt_next(struct dvb_ringbuffer *rbuf, size_t idx, size_t *pktlen)
 {
 	int consumed;
 	int curpktlen;
 	int curpktstatus;
 
 	if (idx == -1) {
-	       idx = rbuf->pread;
+		idx = rbuf->pread;
 	} else {
 		curpktlen = rbuf->data[idx] << 8;
 		curpktlen |= rbuf->data[(idx + 1) % rbuf->size];
···
 	if (consumed < 0)
 		consumed += rbuf->size;
 
-	while((dvb_ringbuffer_avail(rbuf) - consumed) > DVB_RINGBUFFER_PKTHDRSIZE) {
+	while ((dvb_ringbuffer_avail(rbuf) - consumed) > DVB_RINGBUFFER_PKTHDRSIZE) {
 
 		curpktlen = rbuf->data[idx] << 8;
 		curpktlen |= rbuf->data[(idx + 1) % rbuf->size];