All of lore.kernel.org
 help / color / mirror / Atom feed
From: Swen Kalski <kalski.swen@gmail.com>
To: linux-iio@vger.kernel.org
Cc: gregkh@linuxfoundation.org
Subject: [PATCH] Add early return to Method because the else can be ignored.
Date: Wed, 24 Mar 2021 13:20:50 +0100	[thread overview]
Message-ID: <20210324122050.GA28987@kernel-dev> (raw)

---
 drivers/staging/comedi/comedi_buf.c | 56 ++++++++++++++---------------
 1 file changed, 28 insertions(+), 28 deletions(-)

diff --git a/drivers/staging/comedi/comedi_buf.c b/drivers/staging/comedi/comedi_buf.c
index 3ef3ddabf139..05927fb321ba 100644
--- a/drivers/staging/comedi/comedi_buf.c
+++ b/drivers/staging/comedi/comedi_buf.c
@@ -366,42 +366,42 @@ static unsigned int comedi_buf_munge(struct comedi_subdevice *s,
 				     unsigned int num_bytes)
 {
 	struct comedi_async *async = s->async;
-	unsigned int count = 0;
 	const unsigned int num_sample_bytes = comedi_bytes_per_sample(s);
+	unsigned int count = 0;
 
 	if (!s->munge || (async->cmd.flags & CMDF_RAWDATA)) {
 		async->munge_count += num_bytes;
-		count = num_bytes;
-	} else {
-		/* don't munge partial samples */
-		num_bytes -= num_bytes % num_sample_bytes;
-		while (count < num_bytes) {
-			int block_size = num_bytes - count;
-			unsigned int buf_end;
+		return num_bytes;
+	}
 
-			buf_end = async->prealloc_bufsz - async->munge_ptr;
-			if (block_size > buf_end)
-				block_size = buf_end;
+	/* don't munge partial samples */
+	num_bytes -= num_bytes % num_sample_bytes;
+	while (count < num_bytes) {
+		int block_size = num_bytes - count;
+		unsigned int buf_end;
 
-			s->munge(s->device, s,
-				 async->prealloc_buf + async->munge_ptr,
-				 block_size, async->munge_chan);
+		buf_end = async->prealloc_bufsz - async->munge_ptr;
+		if (block_size > buf_end)
+			block_size = buf_end;
 
-			/*
-			 * ensure data is munged in buffer before the
-			 * async buffer munge_count is incremented
-			 */
-			smp_wmb();
-
-			async->munge_chan += block_size / num_sample_bytes;
-			async->munge_chan %= async->cmd.chanlist_len;
-			async->munge_count += block_size;
-			async->munge_ptr += block_size;
-			async->munge_ptr %= async->prealloc_bufsz;
-			count += block_size;
-		}
-	}
+		s->munge(s->device, s,
+			 async->prealloc_buf + async->munge_ptr,
+			 block_size, async->munge_chan);
 
+		/*
+		 * ensure data is munged in buffer before the
+		 * async buffer munge_count is incremented
+		 */
+		smp_wmb();
+
+		async->munge_chan += block_size / num_sample_bytes;
+		async->munge_chan %= async->cmd.chanlist_len;
+		async->munge_count += block_size;
+		async->munge_ptr += block_size;
+		async->munge_ptr %= async->prealloc_bufsz;
+		count += block_size;
+	}
+	
 	return count;
 }
 
-- 
2.17.1


             reply	other threads:[~2021-03-24 12:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-24 12:20 Swen Kalski [this message]
2021-03-24 12:32 ` [PATCH] Add early return to Method because the else can be ignored Greg KH
2021-03-26 11:31 ` Jonathan Cameron

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210324122050.GA28987@kernel-dev \
    --to=kalski.swen@gmail.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-iio@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.