linux-kernel - [PATCH v9 0/3] Improve usage of 'ret' variable and make pcf

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Message-ID: <20251023120043.8661-1-chiru.cezar.89@gmail.com>
Date: Thu, 23 Oct 2025 15:00:40 +0300
From: Cezar Chiru <chiru.cezar.89@...il.com>
To: andi.shyti@...nel.org,
	wsa+renesas@...g-engineering.com
Cc: linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Cezar Chiru <chiru.cezar.89@...il.com>
Subject: [PATCH v9 0/3] Improve usage of 'ret' variable and make pcf_doAdress() void

Hello maintainers,
This patch series is a response to Change Requests made by Andi Shyti on
[PATCH v7 0/3] i2c: pcf8584: Fix errors and warnings reported by checkpatch
and more specific on PATCH: i2c: pcf8584: Move 'ret' variable inside for
loop, break if ret < 0.
Also a comment from Andy Shevchenko on "[PATCH v8 1/1] i2c: pcf8584: Move
'ret' variable inside for loop, break if ret < 0." about using 'goto out;'
instead of break since the goto out; was used in other error path branches
so it makes sense to be consistent.

2 new patches have been introduced into this patch series and they are
dependent on each other that's why the need for a new patch series v9.

Change Requests:
 -remove initialization of 'ret' variable inside for loop of pcf_xfer() as
 it is not needed
 -change pcf_doAddress() function type from int to void as it always
 returns 0.
 -change if (ret < 0) break; with if (ret < 0) goto out; to be consistent
 -change pcf_doAddress() function name to pcf_send_address()

Testing:
 *built kernel and modules with I2C_ALGOPCF=m and my 3 patches applied on
 top of 6.18.0-rc1.
 *installed kernel and external modules generated by build on my laptop
 *rebooted and loaded i2c-algo-pcf.ko without i2c_debug parameter.
 *when loading the .ko with i2c_debug parameter an error is seen in dmesg
 and this is expected as the parameter was removed.
 *No success message related to i2c_algo_pcf was seen in dmesg but also
 no failures.
 *Module loading and unloading successful.
 *No PCF8584 Hardware was available

Cezar Chiru (3):
  i2c: pcf8584: Move 'ret' variable inside for loop, goto out if ret <
    0.
  i2c: pcf8584: Make pcf_doAddress() function void
  i2c: pcf8584: Change pcf_doAdress() to pcf_send_address()

 drivers/i2c/algos/i2c-algo-pcf.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

--
2.43.0