[PATCH] staging: comedi: amplc_pci224: Convert macro GAT_CONFIG to static inline function

[PATCH] staging: comedi: amplc_pci224: Convert macro GAT_CONFIG to static inline function

[simran singhal]

Convert macro GAT_CONFIG to static inline function as static inline
functions are preferred over macros. This change is possible since the
arguments at all call sites have the same type.

This was done using Coccinelle:

@r@
expression e;
@@
- #define GAT_CONFIG(chan, src) e
+ static inline unsigned int pci230_gat_config(unsigned int chan,
+                                              unsigned int src)
+{
+       return ((chan & 3) << 3) | (src & 7);
+}

@r1@
expression dev,reg,chan,src;
@@
-GAT_CONFIG(chan, src)
+pci230_gat_config(chan, src)

Also, the comment describing the macro has been removed manually.

Signed-off-by: simran singhal <singhalsimran0@gmail.com>
---
 drivers/staging/comedi/drivers/amplc_pci224.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/comedi/drivers/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c
index 2e6decf..46026f5 100644
--- a/drivers/staging/comedi/drivers/amplc_pci224.c
+++ b/drivers/staging/comedi/drivers/amplc_pci224.c
@@ -216,8 +216,12 @@
 #define GAT_GND		1	/* GND (i.e. disabled) */
 #define GAT_EXT		2	/* reserved (external gate input) */
 #define GAT_NOUTNM2	3	/* inverted output of channel-2 modulo total */
-/* Macro to construct gate input configuration register value. */
-#define GAT_CONFIG(chan, src)	((((chan) & 3) << 3) | ((src) & 7))
+
+static inline unsigned int pci230_gat_config(unsigned int chan,
+					     unsigned int src)
+{
+	return ((chan & 3) << 3) | (src & 7);
+}
 
 /*
  * Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI224 and PCI234:
@@ -817,10 +821,12 @@ static void pci224_ao_start_pacer(struct comedi_device *dev,
 	 * source.
 	 */
 	/* Make sure Z2-0 is gated on.  */
-	outb(GAT_CONFIG(0, GAT_VCC), devpriv->iobase1 + PCI224_ZGAT_SCE);
+	outb(pci230_gat_config(0, GAT_VCC),
+	     devpriv->iobase1 + PCI224_ZGAT_SCE);
 	/* Cascading with Z2-2. */
 	/* Make sure Z2-2 is gated on.  */
-	outb(GAT_CONFIG(2, GAT_VCC), devpriv->iobase1 + PCI224_ZGAT_SCE);
+	outb(pci230_gat_config(2, GAT_VCC),
+	     devpriv->iobase1 + PCI224_ZGAT_SCE);
 	/* Z2-2 needs 10 MHz clock. */
 	outb(CLK_CONFIG(2, CLK_10MHZ), devpriv->iobase1 + PCI224_ZCLK_SCE);
 	/* Z2-0 is clocked from Z2-2's output. */
-- 
2.7.4

Re: [PATCH] staging: comedi: amplc_pci224: Convert macro GAT_CONFIG to static inline function

[Greg KH]

On Fri, Mar 10, 2017 at 06:12:31PM +0530, simran singhal wrote:
> Convert macro GAT_CONFIG to static inline function as static inline
> functions are preferred over macros. This change is possible since the
> arguments at all call sites have the same type.
> 
> This was done using Coccinelle:
> 
> @r@
> expression e;
> @@
> - #define GAT_CONFIG(chan, src) e
> + static inline unsigned int pci230_gat_config(unsigned int chan,
> +                                              unsigned int src)

Where did you get the name from?

> +{
> +       return ((chan & 3) << 3) | (src & 7);
> +}
> 
> @r1@
> expression dev,reg,chan,src;
> @@
> -GAT_CONFIG(chan, src)
> +pci230_gat_config(chan, src)
> 
> Also, the comment describing the macro has been removed manually.
> 
> Signed-off-by: simran singhal <singhalsimran0@gmail.com>
> ---
>  drivers/staging/comedi/drivers/amplc_pci224.c | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/staging/comedi/drivers/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c
> index 2e6decf..46026f5 100644
> --- a/drivers/staging/comedi/drivers/amplc_pci224.c
> +++ b/drivers/staging/comedi/drivers/amplc_pci224.c
> @@ -216,8 +216,12 @@
>  #define GAT_GND		1	/* GND (i.e. disabled) */
>  #define GAT_EXT		2	/* reserved (external gate input) */
>  #define GAT_NOUTNM2	3	/* inverted output of channel-2 modulo total */
> -/* Macro to construct gate input configuration register value. */
> -#define GAT_CONFIG(chan, src)	((((chan) & 3) << 3) | ((src) & 7))
> +
> +static inline unsigned int pci230_gat_config(unsigned int chan,
> +					     unsigned int src)
> +{
> +	return ((chan & 3) << 3) | (src & 7);
> +}
>  
>  /*
>   * Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI224 and PCI234:
> @@ -817,10 +821,12 @@ static void pci224_ao_start_pacer(struct comedi_device *dev,
>  	 * source.
>  	 */
>  	/* Make sure Z2-0 is gated on.  */
> -	outb(GAT_CONFIG(0, GAT_VCC), devpriv->iobase1 + PCI224_ZGAT_SCE);
> +	outb(pci230_gat_config(0, GAT_VCC),
> +	     devpriv->iobase1 + PCI224_ZGAT_SCE);

Why put this on 2 lines?

>  	/* Cascading with Z2-2. */
>  	/* Make sure Z2-2 is gated on.  */
> -	outb(GAT_CONFIG(2, GAT_VCC), devpriv->iobase1 + PCI224_ZGAT_SCE);
> +	outb(pci230_gat_config(2, GAT_VCC),
> +	     devpriv->iobase1 + PCI224_ZGAT_SCE);

Same here?

thanks,

greg k-h

Re: [PATCH] staging: comedi: amplc_pci224: Convert macro GAT_CONFIG to static inline function

[SIMRAN SINGHAL]

On Sun, Mar 12, 2017 at 7:26 PM, Greg KH <gregkh@linuxfoundation.org> wrote:
> On Fri, Mar 10, 2017 at 06:12:31PM +0530, simran singhal wrote:
>> Convert macro GAT_CONFIG to static inline function as static inline
>> functions are preferred over macros. This change is possible since the
>> arguments at all call sites have the same type.
>>
>> This was done using Coccinelle:
>>
>> @r@
>> expression e;
>> @@
>> - #define GAT_CONFIG(chan, src) e
>> + static inline unsigned int pci230_gat_config(unsigned int chan,
>> +                                              unsigned int src)
>
> Where did you get the name from?
>
Actually the name should be pci224_gat_config as when I checked the other
drivers like amplc_pci230.c then its using pci230_gat_config so according to
what other drivers are using I should use pci224_gat_config.

I will correct this and will resend it.

>> +{
>> +       return ((chan & 3) << 3) | (src & 7);
>> +}
>>
>> @r1@
>> expression dev,reg,chan,src;
>> @@
>> -GAT_CONFIG(chan, src)
>> +pci230_gat_config(chan, src)
>>
>> Also, the comment describing the macro has been removed manually.
>>
>> Signed-off-by: simran singhal <singhalsimran0@gmail.com>
>> ---
>>  drivers/staging/comedi/drivers/amplc_pci224.c | 14 ++++++++++----
>>  1 file changed, 10 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/staging/comedi/drivers/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c
>> index 2e6decf..46026f5 100644
>> --- a/drivers/staging/comedi/drivers/amplc_pci224.c
>> +++ b/drivers/staging/comedi/drivers/amplc_pci224.c
>> @@ -216,8 +216,12 @@
>>  #define GAT_GND              1       /* GND (i.e. disabled) */
>>  #define GAT_EXT              2       /* reserved (external gate input) */
>>  #define GAT_NOUTNM2  3       /* inverted output of channel-2 modulo total */
>> -/* Macro to construct gate input configuration register value. */
>> -#define GAT_CONFIG(chan, src)        ((((chan) & 3) << 3) | ((src) & 7))
>> +
>> +static inline unsigned int pci230_gat_config(unsigned int chan,
>> +                                          unsigned int src)
>> +{
>> +     return ((chan & 3) << 3) | (src & 7);
>> +}
>>
>>  /*
>>   * Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI224 and PCI234:
>> @@ -817,10 +821,12 @@ static void pci224_ao_start_pacer(struct comedi_device *dev,
>>        * source.
>>        */
>>       /* Make sure Z2-0 is gated on.  */
>> -     outb(GAT_CONFIG(0, GAT_VCC), devpriv->iobase1 + PCI224_ZGAT_SCE);
>> +     outb(pci230_gat_config(0, GAT_VCC),
>> +          devpriv->iobase1 + PCI224_ZGAT_SCE);
>
> Why put this on 2 lines?

I'll check this again and if their will be no problem in putting this
on one line then
I'll resend it with the change.

>
>>       /* Cascading with Z2-2. */
>>       /* Make sure Z2-2 is gated on.  */
>> -     outb(GAT_CONFIG(2, GAT_VCC), devpriv->iobase1 + PCI224_ZGAT_SCE);
>> +     outb(pci230_gat_config(2, GAT_VCC),
>> +          devpriv->iobase1 + PCI224_ZGAT_SCE);
>
> Same here?
>
> thanks,
>
> greg k-h