Re: [RFC v5 121/126] hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE

2019-10-14 Thread Vladimir Sementsov-Ogievskiy
14.10.2019 12:14, Philippe Mathieu-Daudé wrote:
> On 10/14/19 11:07 AM, Vladimir Sementsov-Ogievskiy wrote:
>> 12.10.2019 9:33, Philippe Mathieu-Daudé wrote:
>>> On 10/11/19 6:05 PM, Vladimir Sementsov-Ogievskiy wrote:
 If we want to add some info to errp (by error_prepend() or
 error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
 Otherwise, this info will not be added when errp == _err
 (the program will exit prior to the error_append_hint() or
 error_prepend() call).  Fix such cases.

 If we want to check error after errp-function call, we need to
 introduce local_err and than propagate it to errp. Instead, use
 ERRP_AUTO_PROPAGATE macro, benefits are:
 1. No need of explicit error_propagate call
 2. No need of explicit local_err variable: use errp directly
 3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or
  _fatel, this means that we don't break error_abort
  (we'll abort on error_set, not on error_propagate)

 This commit (together with its neighbors) was generated by

 for f in $(git grep -l errp \*.[ch]); do \
   spatch --sp-file scripts/coccinelle/auto-propagated-errp.cocci \
   --macro-file scripts/cocci-macro-file.h --in-place --no-show-diff 
 $f; \
 done;

 then fix a bit of compilation problems: coccinelle for some reason
 leaves several
 f() {
   ...
   goto out;
   ...
   out:
 }
 patterns, with "out:" at function end.

 then
 ./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)"

 (auto-msg was a file with this commit message)

 Still, for backporting it may be more comfortable to use only the first
 command and then do one huge commit.

 Reported-by: Kevin Wolf 
 Reported-by: Greg Kurz 
 Signed-off-by: Vladimir Sementsov-Ogievskiy 
 ---
    hw/sd/ssi-sd.c | 14 --
    1 file changed, 8 insertions(+), 6 deletions(-)

 diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
 index 91db069212..f42204d649 100644
 --- a/hw/sd/ssi-sd.c
 +++ b/hw/sd/ssi-sd.c
 @@ -241,10 +241,10 @@ static const VMStateDescription vmstate_ssi_sd = {
    static void ssi_sd_realize(SSISlave *d, Error **errp)
    {
 +    ERRP_AUTO_PROPAGATE();
    ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, d);
    DeviceState *carddev;
    DriveInfo *dinfo;
 -    Error *err = NULL;
    qbus_create_inplace(>sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
    DEVICE(d), "sd-bus");
 @@ -254,12 +254,14 @@ static void ssi_sd_realize(SSISlave *d, Error **errp)
    dinfo = drive_get_next(IF_SD);
    carddev = qdev_create(BUS(>sdbus), TYPE_SD_CARD);
    if (dinfo) {
 -    qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo), 
 );
 +    qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo),
 +    errp);
>>>
>>> This fits 72 chars, can you keep it in the same line?
>>
>> Honestly, I'd prefer not fixing code style in these 100 auto-generated 
>> commits...
>> But if only you request this, it's not a problem.
> 
> Ah, Coccinelle added the newline. Hmm maybe there is a spatch argument to set 
> the maximum line length?
> 
> $ spatch --longhelp
> [...]
>    --linux-spacing   spacing of + code follows the conventions of 
> Linux
>    --smpl-spacing    spacing of + code follows the semantic patch
>    --indent  default indent, in spaces (no tabs)
>    --max-width   column limit for generated code
> 
> Have you tried --max-width? Maybe we need a combination with --smpl-spacing.

Hmm, thanks, I'll try.

> 
>>>
    }
 -    object_property_set_bool(OBJECT(carddev), true, "spi", );
 -    object_property_set_bool(OBJECT(carddev), true, "realized", );
 -    if (err) {
 -    error_setg(errp, "failed to init SD card: %s", 
 error_get_pretty(err));
 +    object_property_set_bool(OBJECT(carddev), true, "spi", errp);
 +    object_property_set_bool(OBJECT(carddev), true, "realized", errp);
 +    if (*errp) {
 +    error_setg(errp, "failed to init SD card: %s",
 +   error_get_pretty(*errp));
>>>
>>> Ditto...
>>>
    return;
    }
    }

>>>
>>> If possible please squash with "47/126 SD (Secure Card)"
>>
>> Hmm this is in separate, as it's unmaintained accordingly to MAINTAINERS. 
>> I'll rebase
>> the next version on your MAINTAINERS-fixes and it should work.
>>
>>>
>>> Reviewed-by: Philippe Mathieu-Daudé 
>>
>> Thanks!
>>


-- 
Best regards,
Vladimir


Re: [RFC v5 121/126] hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE

2019-10-14 Thread Philippe Mathieu-Daudé

On 10/14/19 11:07 AM, Vladimir Sementsov-Ogievskiy wrote:

12.10.2019 9:33, Philippe Mathieu-Daudé wrote:

On 10/11/19 6:05 PM, Vladimir Sementsov-Ogievskiy wrote:

If we want to add some info to errp (by error_prepend() or
error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
Otherwise, this info will not be added when errp == _err
(the program will exit prior to the error_append_hint() or
error_prepend() call).  Fix such cases.

If we want to check error after errp-function call, we need to
introduce local_err and than propagate it to errp. Instead, use
ERRP_AUTO_PROPAGATE macro, benefits are:
1. No need of explicit error_propagate call
2. No need of explicit local_err variable: use errp directly
3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or
     _fatel, this means that we don't break error_abort
     (we'll abort on error_set, not on error_propagate)

This commit (together with its neighbors) was generated by

for f in $(git grep -l errp \*.[ch]); do \
  spatch --sp-file scripts/coccinelle/auto-propagated-errp.cocci \
  --macro-file scripts/cocci-macro-file.h --in-place --no-show-diff $f; \
done;

then fix a bit of compilation problems: coccinelle for some reason
leaves several
f() {
  ...
  goto out;
  ...
  out:
}
patterns, with "out:" at function end.

then
./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)"

(auto-msg was a file with this commit message)

Still, for backporting it may be more comfortable to use only the first
command and then do one huge commit.

Reported-by: Kevin Wolf 
Reported-by: Greg Kurz 
Signed-off-by: Vladimir Sementsov-Ogievskiy 
---
   hw/sd/ssi-sd.c | 14 --
   1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
index 91db069212..f42204d649 100644
--- a/hw/sd/ssi-sd.c
+++ b/hw/sd/ssi-sd.c
@@ -241,10 +241,10 @@ static const VMStateDescription vmstate_ssi_sd = {
   static void ssi_sd_realize(SSISlave *d, Error **errp)
   {
+    ERRP_AUTO_PROPAGATE();
   ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, d);
   DeviceState *carddev;
   DriveInfo *dinfo;
-    Error *err = NULL;
   qbus_create_inplace(>sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
   DEVICE(d), "sd-bus");
@@ -254,12 +254,14 @@ static void ssi_sd_realize(SSISlave *d, Error **errp)
   dinfo = drive_get_next(IF_SD);
   carddev = qdev_create(BUS(>sdbus), TYPE_SD_CARD);
   if (dinfo) {
-    qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo), 
);
+    qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo),
+    errp);


This fits 72 chars, can you keep it in the same line?


Honestly, I'd prefer not fixing code style in these 100 auto-generated 
commits...
But if only you request this, it's not a problem.


Ah, Coccinelle added the newline. Hmm maybe there is a spatch argument 
to set the maximum line length?


$ spatch --longhelp
[...]
  --linux-spacing   spacing of + code follows the 
conventions of Linux
  --smpl-spacingspacing of + code follows the semantic 
patch

  --indent  default indent, in spaces (no tabs)
  --max-width   column limit for generated code

Have you tried --max-width? Maybe we need a combination with --smpl-spacing.




   }
-    object_property_set_bool(OBJECT(carddev), true, "spi", );
-    object_property_set_bool(OBJECT(carddev), true, "realized", );
-    if (err) {
-    error_setg(errp, "failed to init SD card: %s", error_get_pretty(err));
+    object_property_set_bool(OBJECT(carddev), true, "spi", errp);
+    object_property_set_bool(OBJECT(carddev), true, "realized", errp);
+    if (*errp) {
+    error_setg(errp, "failed to init SD card: %s",
+   error_get_pretty(*errp));


Ditto...


   return;
   }
   }



If possible please squash with "47/126 SD (Secure Card)"


Hmm this is in separate, as it's unmaintained accordingly to MAINTAINERS. I'll 
rebase
the next version on your MAINTAINERS-fixes and it should work.



Reviewed-by: Philippe Mathieu-Daudé 


Thanks!





Re: [RFC v5 121/126] hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE

2019-10-14 Thread Vladimir Sementsov-Ogievskiy
12.10.2019 9:33, Philippe Mathieu-Daudé wrote:
> On 10/11/19 6:05 PM, Vladimir Sementsov-Ogievskiy wrote:
>> If we want to add some info to errp (by error_prepend() or
>> error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
>> Otherwise, this info will not be added when errp == _err
>> (the program will exit prior to the error_append_hint() or
>> error_prepend() call).  Fix such cases.
>>
>> If we want to check error after errp-function call, we need to
>> introduce local_err and than propagate it to errp. Instead, use
>> ERRP_AUTO_PROPAGATE macro, benefits are:
>> 1. No need of explicit error_propagate call
>> 2. No need of explicit local_err variable: use errp directly
>> 3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or
>>     _fatel, this means that we don't break error_abort
>>     (we'll abort on error_set, not on error_propagate)
>>
>> This commit (together with its neighbors) was generated by
>>
>> for f in $(git grep -l errp \*.[ch]); do \
>>  spatch --sp-file scripts/coccinelle/auto-propagated-errp.cocci \
>>  --macro-file scripts/cocci-macro-file.h --in-place --no-show-diff $f; \
>> done;
>>
>> then fix a bit of compilation problems: coccinelle for some reason
>> leaves several
>> f() {
>>  ...
>>  goto out;
>>  ...
>>  out:
>> }
>> patterns, with "out:" at function end.
>>
>> then
>> ./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)"
>>
>> (auto-msg was a file with this commit message)
>>
>> Still, for backporting it may be more comfortable to use only the first
>> command and then do one huge commit.
>>
>> Reported-by: Kevin Wolf 
>> Reported-by: Greg Kurz 
>> Signed-off-by: Vladimir Sementsov-Ogievskiy 
>> ---
>>   hw/sd/ssi-sd.c | 14 --
>>   1 file changed, 8 insertions(+), 6 deletions(-)
>>
>> diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
>> index 91db069212..f42204d649 100644
>> --- a/hw/sd/ssi-sd.c
>> +++ b/hw/sd/ssi-sd.c
>> @@ -241,10 +241,10 @@ static const VMStateDescription vmstate_ssi_sd = {
>>   static void ssi_sd_realize(SSISlave *d, Error **errp)
>>   {
>> +    ERRP_AUTO_PROPAGATE();
>>   ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, d);
>>   DeviceState *carddev;
>>   DriveInfo *dinfo;
>> -    Error *err = NULL;
>>   qbus_create_inplace(>sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
>>   DEVICE(d), "sd-bus");
>> @@ -254,12 +254,14 @@ static void ssi_sd_realize(SSISlave *d, Error **errp)
>>   dinfo = drive_get_next(IF_SD);
>>   carddev = qdev_create(BUS(>sdbus), TYPE_SD_CARD);
>>   if (dinfo) {
>> -    qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo), 
>> );
>> +    qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo),
>> +    errp);
> 
> This fits 72 chars, can you keep it in the same line?

Honestly, I'd prefer not fixing code style in these 100 auto-generated 
commits...
But if only you request this, it's not a problem.

> 
>>   }
>> -    object_property_set_bool(OBJECT(carddev), true, "spi", );
>> -    object_property_set_bool(OBJECT(carddev), true, "realized", );
>> -    if (err) {
>> -    error_setg(errp, "failed to init SD card: %s", 
>> error_get_pretty(err));
>> +    object_property_set_bool(OBJECT(carddev), true, "spi", errp);
>> +    object_property_set_bool(OBJECT(carddev), true, "realized", errp);
>> +    if (*errp) {
>> +    error_setg(errp, "failed to init SD card: %s",
>> +   error_get_pretty(*errp));
> 
> Ditto...
> 
>>   return;
>>   }
>>   }
>>
> 
> If possible please squash with "47/126 SD (Secure Card)"

Hmm this is in separate, as it's unmaintained accordingly to MAINTAINERS. I'll 
rebase
the next version on your MAINTAINERS-fixes and it should work.

> 
> Reviewed-by: Philippe Mathieu-Daudé 

Thanks!

-- 
Best regards,
Vladimir


Re: [RFC v5 121/126] hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE

2019-10-12 Thread Philippe Mathieu-Daudé

On 10/11/19 6:05 PM, Vladimir Sementsov-Ogievskiy wrote:

If we want to add some info to errp (by error_prepend() or
error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
Otherwise, this info will not be added when errp == _err
(the program will exit prior to the error_append_hint() or
error_prepend() call).  Fix such cases.

If we want to check error after errp-function call, we need to
introduce local_err and than propagate it to errp. Instead, use
ERRP_AUTO_PROPAGATE macro, benefits are:
1. No need of explicit error_propagate call
2. No need of explicit local_err variable: use errp directly
3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or
_fatel, this means that we don't break error_abort
(we'll abort on error_set, not on error_propagate)

This commit (together with its neighbors) was generated by

for f in $(git grep -l errp \*.[ch]); do \
 spatch --sp-file scripts/coccinelle/auto-propagated-errp.cocci \
 --macro-file scripts/cocci-macro-file.h --in-place --no-show-diff $f; \
done;

then fix a bit of compilation problems: coccinelle for some reason
leaves several
f() {
 ...
 goto out;
 ...
 out:
}
patterns, with "out:" at function end.

then
./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)"

(auto-msg was a file with this commit message)

Still, for backporting it may be more comfortable to use only the first
command and then do one huge commit.

Reported-by: Kevin Wolf 
Reported-by: Greg Kurz 
Signed-off-by: Vladimir Sementsov-Ogievskiy 
---
  hw/sd/ssi-sd.c | 14 --
  1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
index 91db069212..f42204d649 100644
--- a/hw/sd/ssi-sd.c
+++ b/hw/sd/ssi-sd.c
@@ -241,10 +241,10 @@ static const VMStateDescription vmstate_ssi_sd = {
  
  static void ssi_sd_realize(SSISlave *d, Error **errp)

  {
+ERRP_AUTO_PROPAGATE();
  ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, d);
  DeviceState *carddev;
  DriveInfo *dinfo;
-Error *err = NULL;
  
  qbus_create_inplace(>sdbus, sizeof(s->sdbus), TYPE_SD_BUS,

  DEVICE(d), "sd-bus");
@@ -254,12 +254,14 @@ static void ssi_sd_realize(SSISlave *d, Error **errp)
  dinfo = drive_get_next(IF_SD);
  carddev = qdev_create(BUS(>sdbus), TYPE_SD_CARD);
  if (dinfo) {
-qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo), 
);
+qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo),
+errp);


This fits 72 chars, can you keep it in the same line?


  }
-object_property_set_bool(OBJECT(carddev), true, "spi", );
-object_property_set_bool(OBJECT(carddev), true, "realized", );
-if (err) {
-error_setg(errp, "failed to init SD card: %s", error_get_pretty(err));
+object_property_set_bool(OBJECT(carddev), true, "spi", errp);
+object_property_set_bool(OBJECT(carddev), true, "realized", errp);
+if (*errp) {
+error_setg(errp, "failed to init SD card: %s",
+   error_get_pretty(*errp));


Ditto...


  return;
  }
  }



If possible please squash with "47/126 SD (Secure Card)"

Reviewed-by: Philippe Mathieu-Daudé