Linux-i2c Archive on lore.kernel.org
 help / color / Atom feed
From: Chris Packham <chris.packham@alliedtelesis.co.nz>
To: Wolfram Sang <wsa@kernel.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
	linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
	Chris Packham <chris.packham@alliedtelesis.co.nz>
Subject: [PATCH v3 3/4] i2c: mpc: Remove redundant NULL check
Date: Tue, 13 Apr 2021 17:09:54 +1200
Message-ID: <20210413050956.23264-4-chris.packham@alliedtelesis.co.nz> (raw)
In-Reply-To: <20210413050956.23264-1-chris.packham@alliedtelesis.co.nz>

In mpc_i2c_get_fdr_8xxx div is assigned as we iterate through the
mpc_i2c_dividers_8xxx array. By the time we exit the loop div will
either have the value that matches the requested speed or be pointing at
the last entry in mpc_i2c_dividers_8xxx. Checking for div being NULL
after the loop is redundant so remove the check.

Reported-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
 drivers/i2c/busses/i2c-mpc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index 9818f9f6a553..c30687483147 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -377,7 +377,7 @@ static int mpc_i2c_get_fdr_8xxx(struct device_node *node, u32 clock,
 	}
 
 	*real_clk = fsl_get_sys_freq() / prescaler / div->divider;
-	return div ? (int)div->fdr : -EINVAL;
+	return (int)div->fdr;
 }
 
 static void mpc_i2c_setup_8xxx(struct device_node *node,
-- 
2.31.1


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-13  5:09 [PATCH v3 0/4] i2c: mpc: Refactor to improve responsiveness Chris Packham
2021-04-13  5:09 ` [PATCH v3 1/4] i2c: mpc: use device managed APIs Chris Packham
2021-04-13 12:21   ` Wolfram Sang
2021-04-13 13:31     ` Andy Shevchenko
2021-04-13 13:31       ` Andy Shevchenko
2021-04-13  5:09 ` [PATCH v3 2/4] i2c: mpc: Interrupt driven transfer Chris Packham
2021-04-13 12:22   ` Wolfram Sang
2021-04-13 13:52   ` Andy Shevchenko
2021-04-13 22:28     ` Chris Packham
2021-04-13 23:23       ` Chris Packham
2021-04-13  5:09 ` Chris Packham [this message]
2021-04-13 12:27   ` [PATCH v3 3/4] i2c: mpc: Remove redundant NULL check Wolfram Sang
2021-04-13  5:09 ` [PATCH v3 3/3] MAINTAINERS: Add Chris Packham as FREESCALE MPC I2C maintainer Chris Packham
2021-04-13  5:14   ` Chris Packham
2021-04-13 11:19     ` Andy Shevchenko
2021-04-13  5:09 ` [PATCH v3 4/4] " Chris Packham
2021-04-13 12:27   ` Wolfram Sang

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=20210413050956.23264-4-chris.packham@alliedtelesis.co.nz \
    --to=chris.packham@alliedtelesis.co.nz \
    --cc=andy.shevchenko@gmail.com \
    --cc=linux-i2c@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=wsa@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

Linux-i2c Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-i2c/0 linux-i2c/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-i2c linux-i2c/ https://lore.kernel.org/linux-i2c \
		linux-i2c@vger.kernel.org
	public-inbox-index linux-i2c

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-i2c


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git