Re: [PATCH 1/4 v2] firmware: stratix10-svc: Fix genpool creation error handling

[Markus Elfring]

> 'svc_create_memory_pool()' returns an error pointer on error, not NULL.

Such information is helpful.


> Fix the corresponding test and return value accordingly.
>
> Move the genpool allocation after a few devm_kzalloc in order to ease
> error handling.

How do you think about a wording variant like the following?

   Change description:
   * Use a check of the failure predicate which is documented for
 the svc_create_memory_pool() function in the same source file.

   * Move the genpool allocation behind a few devm_kzalloc() calls
 in order to ease exception handling.

Regards,
Markus

[PATCH 1/4 v2] firmware: stratix10-svc: Fix genpool creation error handling

[Christophe JAILLET]

'svc_create_memory_pool()' returns an error pointer on error, not NULL.
Fix the corresponding test and return value accordingly.

Move the genpool allocation after a few devm_kzalloc in order to ease
error handling.

Fixes: 7ca5ce896524 ("firmware: add Intel Stratix10 service layer driver")
Signed-off-by: Christophe JAILLET 
---
 drivers/firmware/stratix10-svc.c | 8 
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index d5f0769f3761..3a176e62754a 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -997,10 +997,6 @@ static int stratix10_svc_drv_probe(struct platform_device 
*pdev)
if (ret)
return ret;
 
-   genpool = svc_create_memory_pool(pdev, sh_memory);
-   if (!genpool)
-   return -ENOMEM;
-
/* allocate service controller and supporting channel */
controller = devm_kzalloc(dev, sizeof(*controller), GFP_KERNEL);
if (!controller)
@@ -1011,6 +1007,10 @@ static int stratix10_svc_drv_probe(struct 
platform_device *pdev)
if (!chans)
return -ENOMEM;
 
+   genpool = svc_create_memory_pool(pdev, sh_memory);
+   if (IS_ERR(genpool))
+   return PTR_ERR(genpool);
+
controller->dev = dev;
controller->num_chans = SVC_NUM_CHANNEL;
controller->num_active_client = 0;
-- 
2.25.1