linux-kernel - Re: [Outreachy kernel] [PATCH 4/5] staging: sm750fb: Remove unnecessary else after return

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Date:   Wed, 1 Mar 2017 00:35:26 +0530
From:   SIMRAN SINGHAL <singhalsimran0@...il.com>
To:     Julia Lawall <julia.lawall@...6.fr>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        lustre-devel@...ts.lustre.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
        outreachy-kernel@...glegroups.com
Subject: Re: [Outreachy kernel] [PATCH 4/5] staging: sm750fb: Remove
 unnecessary else after return

On Wed, Mar 1, 2017 at 12:30 AM, Julia Lawall <julia.lawall@...6.fr> wrote:
>
>
> On Wed, 1 Mar 2017, SIMRAN SINGHAL wrote:
>
>> On Tue, Feb 28, 2017 at 2:45 AM, Julia Lawall <julia.lawall@...6.fr> wrote:
>> >
>> >
>> > On Mon, 27 Feb 2017, simran singhal wrote:
>> >
>> >> This patch fixes the checkpatch warning that else is not generally
>> >> useful after a break or return.
>> >>
>> >> This was done using Coccinelle:
>> >> @@
>> >> expression e2;
>> >> statement s1;
>> >> @@
>> >> if(e2) { ... return ...; }
>> >> -else
>> >>          s1
>> >>
>> >> Signed-off-by: simran singhal <singhalsimran0@...il.com>
>> >> ---
>> >>  drivers/staging/sm750fb/ddk750_sii164.c | 6 ++----
>> >>  drivers/staging/sm750fb/ddk750_swi2c.c  | 6 ++----
>> >>  2 files changed, 4 insertions(+), 8 deletions(-)
>> >>
>> >> diff --git a/drivers/staging/sm750fb/ddk750_sii164.c b/drivers/staging/sm750fb/ddk750_sii164.c
>> >> index 259006a..6906598 100644
>> >> --- a/drivers/staging/sm750fb/ddk750_sii164.c
>> >> +++ b/drivers/staging/sm750fb/ddk750_sii164.c
>> >> @@ -368,8 +368,7 @@ unsigned char sii164IsConnected(void)
>> >>       hotPlugValue = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_HOT_PLUG_STATUS_MASK;
>> >>       if (hotPlugValue == SII164_DETECT_HOT_PLUG_STATUS_ON)
>> >>               return 1;
>> >> -     else
>> >> -             return 0;
>> >> +     return 0;
>> >
>> >
>> > Totally unrelated to what you are doing, but I wonder if these return
>> > values should be true and false?  Perhaps it would help to see how the
>> > return values are used at the calling context.
>> >
>> you want me to go ahead with what Joe mentioned and also do the same
>> changes here also.
>
> I think that it would be best to complete what you have underway already.
> When those patches are picked up by Greg, you can look into the
> possibility of using true and false.
>
Thanks, so for now I can ignore this.
> julia
>
>> > julia
>> >
>> >>  }
>> >>
>> >>  /*
>> >> @@ -387,8 +386,7 @@ unsigned char sii164CheckInterrupt(void)
>> >>       detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_MONITOR_STATE_MASK;
>> >>       if (detectReg == SII164_DETECT_MONITOR_STATE_CHANGE)
>> >>               return 1;
>> >> -     else
>> >> -             return 0;
>> >> +     return 0;
>> >>  }
>> >>
>> >>  /*
>> >> diff --git a/drivers/staging/sm750fb/ddk750_swi2c.c b/drivers/staging/sm750fb/ddk750_swi2c.c
>> >> index a4ac07c..5997349 100644
>> >> --- a/drivers/staging/sm750fb/ddk750_swi2c.c
>> >> +++ b/drivers/staging/sm750fb/ddk750_swi2c.c
>> >> @@ -199,8 +199,7 @@ static unsigned char sw_i2c_read_sda(void)
>> >>       gpio_data = peek32(sw_i2c_data_gpio_data_reg);
>> >>       if (gpio_data & (1 << sw_i2c_data_gpio))
>> >>               return 1;
>> >> -     else
>> >> -             return 0;
>> >> +     return 0;
>> >>  }
>> >>
>> >>  /*
>> >> @@ -295,8 +294,7 @@ static long sw_i2c_write_byte(unsigned char data)
>> >>
>> >>       if (i < 0xff)
>> >>               return 0;
>> >> -     else
>> >> -             return -1;
>> >> +     return -1;
>> >>  }
>> >>
>> >>  /*
>> >> --
>> >> 2.7.4
>> >>
>> >> --
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>>
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