[STYLE v1 1/3] cxl/mbox: remove redundant debug msg

[STYLE v1 1/3] cxl/mbox: remove redundant debug msg

[Raghu H]

A return of errno should be good enough if the memory allocation fails,
the debug message here is redundatant as per the coding style, removing it.

Signed-off-by: Raghu H <raghuhack78@gmail.com>
---
 drivers/cxl/core/mbox.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index f2addb457172..11ea145b4b1f 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -1112,10 +1112,8 @@ struct cxl_dev_state *cxl_dev_state_create(struct device *dev)
 	struct cxl_dev_state *cxlds;
 
 	cxlds = devm_kzalloc(dev, sizeof(*cxlds), GFP_KERNEL);
-	if (!cxlds) {
-		dev_err(dev, "No memory available\n");
+	if (!cxlds)
 		return ERR_PTR(-ENOMEM);
-	}
 
 	mutex_init(&cxlds->mbox_mutex);
 	mutex_init(&cxlds->event.log_lock);
-- 
2.39.2

[STYLE v1 2/3] cxl/core/port: Use tabs to fix styling errors

[Raghu H]

Styling errors due to linux of unwanted spaces in the definition,
modified the definition to use tab to fix the styling issue.

Signed-off-by: Raghu H <raghuhack78@gmail.com>
---
 drivers/cxl/core/port.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index 8ee6b6e2e2a4..7c3aaed180ca 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -95,15 +95,15 @@ static ssize_t size_show(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR_RO(size);
 
-#define CXL_DECODER_FLAG_ATTR(name, flag)                            \
-static ssize_t name##_show(struct device *dev,                       \
-			   struct device_attribute *attr, char *buf) \
-{                                                                    \
-	struct cxl_decoder *cxld = to_cxl_decoder(dev);              \
-                                                                     \
-	return sysfs_emit(buf, "%s\n",                               \
-			  (cxld->flags & (flag)) ? "1" : "0");       \
-}                                                                    \
+#define CXL_DECODER_FLAG_ATTR(name, flag)				\
+static ssize_t name##_show(struct device *dev,				\
+			   struct device_attribute *attr, char *buf)	\
+{									\
+	struct cxl_decoder *cxld = to_cxl_decoder(dev);			\
+									\
+	return sysfs_emit(buf, "%s\n",					\
+			  (cxld->flags & (flag)) ? "1" : "0");		\
+}									\
 static DEVICE_ATTR_RO(name)
 
 CXL_DECODER_FLAG_ATTR(cap_pmem, CXL_DECODER_F_PMEM);
-- 
2.39.2

[STYLE v1 3/3] cxl/core/region:Remove else after return statement

[Raghu H]

The else section here is redundant after return statement, removing it.
Sanity and correctness is not affected due to this fix.

Signed-off-by: Raghu H <raghuhack78@gmail.com>
---
 drivers/cxl/core/region.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index f29028148806..1d695107b4a7 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -2666,11 +2666,10 @@ static int cxl_region_invalidate_memregion(struct cxl_region *cxlr)
 				"Bypassing cpu_cache_invalidate_memregion() for testing!\n");
 			clear_bit(CXL_REGION_F_INCOHERENT, &cxlr->flags);
 			return 0;
-		} else {
-			dev_err(&cxlr->dev,
-				"Failed to synchronize CPU cache state\n");
-			return -ENXIO;
 		}
+		dev_err(&cxlr->dev,
+			"Failed to synchronize CPU cache state\n");
+		return -ENXIO;
 	}
 
 	cpu_cache_invalidate_memregion(IORES_DESC_CXL);
-- 
2.39.2

Re: [STYLE v1 1/3] cxl/mbox: remove redundant debug msg

[Ira Weiny]

Raghu H wrote:
> A return of errno should be good enough if the memory allocation fails,
> the debug message here is redundatant as per the coding style, removing it.
> 
> Signed-off-by: Raghu H <raghuhack78@gmail.com>

I'm not seeing a lot of value in this error message either.  There are
plenty of other places probe can fail without any errors at all.

I guess:

Reviewed-by: Ira Weiny <ira.weiny@intel.com>

Re: [STYLE v1 2/3] cxl/core/port: Use tabs to fix styling errors

[Ira Weiny]

Raghu H wrote:
> Styling errors due to linux of unwanted spaces in the definition,
> modified the definition to use tab to fix the styling issue.
> 
> Signed-off-by: Raghu H <raghuhack78@gmail.com>

NAK

This is unnecessary churn.  The formatting of the file is fine and very
readable.

Ira

> ---
>  drivers/cxl/core/port.c | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
> index 8ee6b6e2e2a4..7c3aaed180ca 100644
> --- a/drivers/cxl/core/port.c
> +++ b/drivers/cxl/core/port.c
> @@ -95,15 +95,15 @@ static ssize_t size_show(struct device *dev, struct device_attribute *attr,
>  }
>  static DEVICE_ATTR_RO(size);
>  
> -#define CXL_DECODER_FLAG_ATTR(name, flag)                            \
> -static ssize_t name##_show(struct device *dev,                       \
> -			   struct device_attribute *attr, char *buf) \
> -{                                                                    \
> -	struct cxl_decoder *cxld = to_cxl_decoder(dev);              \
> -                                                                     \
> -	return sysfs_emit(buf, "%s\n",                               \
> -			  (cxld->flags & (flag)) ? "1" : "0");       \
> -}                                                                    \
> +#define CXL_DECODER_FLAG_ATTR(name, flag)				\
> +static ssize_t name##_show(struct device *dev,				\
> +			   struct device_attribute *attr, char *buf)	\
> +{									\
> +	struct cxl_decoder *cxld = to_cxl_decoder(dev);			\
> +									\
> +	return sysfs_emit(buf, "%s\n",					\
> +			  (cxld->flags & (flag)) ? "1" : "0");		\
> +}									\
>  static DEVICE_ATTR_RO(name)
>  
>  CXL_DECODER_FLAG_ATTR(cap_pmem, CXL_DECODER_F_PMEM);
> -- 
> 2.39.2
> 

Re: [STYLE v1 3/3] cxl/core/region:Remove else after return statement

[Ira Weiny]

Raghu H wrote:
> The else section here is redundant after return statement, removing it.
> Sanity and correctness is not affected due to this fix.
> 
> Signed-off-by: Raghu H <raghuhack78@gmail.com>

Ok, per my eyes I would have liked an extra space before the dev_err()
but...

Reviewed-by: Ira Weiny <ira.weiny@intel.com>

> ---
>  drivers/cxl/core/region.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> index f29028148806..1d695107b4a7 100644
> --- a/drivers/cxl/core/region.c
> +++ b/drivers/cxl/core/region.c
> @@ -2666,11 +2666,10 @@ static int cxl_region_invalidate_memregion(struct cxl_region *cxlr)
>  				"Bypassing cpu_cache_invalidate_memregion() for testing!\n");
>  			clear_bit(CXL_REGION_F_INCOHERENT, &cxlr->flags);
>  			return 0;
> -		} else {
> -			dev_err(&cxlr->dev,
> -				"Failed to synchronize CPU cache state\n");
> -			return -ENXIO;
>  		}
> +		dev_err(&cxlr->dev,
> +			"Failed to synchronize CPU cache state\n");
> +		return -ENXIO;
>  	}
>  
>  	cpu_cache_invalidate_memregion(IORES_DESC_CXL);
> -- 
> 2.39.2
> 

Re: [STYLE v1 1/3] cxl/mbox: remove redundant debug msg

[Alison Schofield]

On Wed, Apr 19, 2023 at 11:14:41AM +0000, Raghu H wrote:
> A return of errno should be good enough if the memory allocation fails,
> the debug message here is redundatant as per the coding style, removing it.

Hi Raghu,

Thanks for the patch. The code change looks fine.

Here is some feedback on the commit msg and log:

This removes a dev_err() not a debug message, dev_dbg()

Commit msg can be clearer like:
cxl/mbox: Remove redundant dev_err() after failed mem alloc

Please include PATCH in the subject line.
See Documentation/process/submitting-patches.rst or peruse other
patches on the mailing list and subsystem to see examples.

Alison


> 
> Signed-off-by: Raghu H <raghuhack78@gmail.com>
> ---
>  drivers/cxl/core/mbox.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index f2addb457172..11ea145b4b1f 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -1112,10 +1112,8 @@ struct cxl_dev_state *cxl_dev_state_create(struct device *dev)
>  	struct cxl_dev_state *cxlds;
>  
>  	cxlds = devm_kzalloc(dev, sizeof(*cxlds), GFP_KERNEL);
> -	if (!cxlds) {
> -		dev_err(dev, "No memory available\n");
> +	if (!cxlds)
>  		return ERR_PTR(-ENOMEM);
> -	}
>  
>  	mutex_init(&cxlds->mbox_mutex);
>  	mutex_init(&cxlds->event.log_lock);
> -- 
> 2.39.2
> 

Re: [STYLE v1 3/3] cxl/core/region:Remove else after return statement

[Alison Schofield]

On Thu, Apr 27, 2023 at 12:13:14PM -0700, Ira Weiny wrote:
> Raghu H wrote:
> > The else section here is redundant after return statement, removing it.
> > Sanity and correctness is not affected due to this fix.
> > 
> > Signed-off-by: Raghu H <raghuhack78@gmail.com>
> 
> Ok, per my eyes I would have liked an extra space before the dev_err()
> but...

Well, I asked Rahgu to give us a v2 with mostly patch formatting fixups,
so let's get that extra space too :)

> 
> Reviewed-by: Ira Weiny <ira.weiny@intel.com>
> 
> > ---
> >  drivers/cxl/core/region.c | 7 +++----
> >  1 file changed, 3 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> > index f29028148806..1d695107b4a7 100644
> > --- a/drivers/cxl/core/region.c
> > +++ b/drivers/cxl/core/region.c
> > @@ -2666,11 +2666,10 @@ static int cxl_region_invalidate_memregion(struct cxl_region *cxlr)
> >  				"Bypassing cpu_cache_invalidate_memregion() for testing!\n");
> >  			clear_bit(CXL_REGION_F_INCOHERENT, &cxlr->flags);
> >  			return 0;
> > -		} else {
> > -			dev_err(&cxlr->dev,
> > -				"Failed to synchronize CPU cache state\n");
> > -			return -ENXIO;
> >  		}
> > +		dev_err(&cxlr->dev,
> > +			"Failed to synchronize CPU cache state\n");
> > +		return -ENXIO;
> >  	}
> >  
> >  	cpu_cache_invalidate_memregion(IORES_DESC_CXL);
> > -- 
> > 2.39.2
> > 

Re: [STYLE v1 3/3] cxl/core/region:Remove else after return statement

[RAGHU H]

Thanks Alison & Ira for comments

I missed your messages due to personal reasons.

Will clean and follow it up with v2 very soon.

On Fri, Apr 28, 2023 at 1:19 AM Alison Schofield
<alison.schofield@intel.com> wrote:
>
> On Thu, Apr 27, 2023 at 12:13:14PM -0700, Ira Weiny wrote:
> > Raghu H wrote:
> > > The else section here is redundant after return statement, removing it.
> > > Sanity and correctness is not affected due to this fix.
> > >
> > > Signed-off-by: Raghu H <raghuhack78@gmail.com>
> >
> > Ok, per my eyes I would have liked an extra space before the dev_err()
> > but...
>
> Well, I asked Rahgu to give us a v2 with mostly patch formatting fixups,
> so let's get that extra space too :)
>
> >
> > Reviewed-by: Ira Weiny <ira.weiny@intel.com>
> >
> > > ---
> > >  drivers/cxl/core/region.c | 7 +++----
> > >  1 file changed, 3 insertions(+), 4 deletions(-)
> > >
> > > diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> > > index f29028148806..1d695107b4a7 100644
> > > --- a/drivers/cxl/core/region.c
> > > +++ b/drivers/cxl/core/region.c
> > > @@ -2666,11 +2666,10 @@ static int cxl_region_invalidate_memregion(struct cxl_region *cxlr)
> > >                             "Bypassing cpu_cache_invalidate_memregion() for testing!\n");
> > >                     clear_bit(CXL_REGION_F_INCOHERENT, &cxlr->flags);
> > >                     return 0;
> > > -           } else {
> > > -                   dev_err(&cxlr->dev,
> > > -                           "Failed to synchronize CPU cache state\n");
> > > -                   return -ENXIO;
> > >             }
> > > +           dev_err(&cxlr->dev,
> > > +                   "Failed to synchronize CPU cache state\n");
> > > +           return -ENXIO;
> > >     }
> > >
> > >     cpu_cache_invalidate_memregion(IORES_DESC_CXL);
> > > --
> > > 2.39.2
> > >