Re: [PATCH 4/4 v2] firmware: stratix10-svc: Slightly simplify code

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Hi,

On 5/1/20 10:48 AM, Christophe JAILLET wrote:
Le 01/05/2020 à 17:40, Richard Gong a écrit :
Hi,

On 4/29/20 1:52 AM, Christophe JAILLET wrote:
Replace 'devm_kmalloc_array(... | __GFP_ZERO)' with the equivalent and
shorter 'devm_kcalloc(...)'.

It doesn't make much sense.
Actually devm_kcalloc returns devm_kmalloc_array(.., flag | __GFP_ZERO).

The only goal is to have a sightly less verbose code.
This saves one line of code and there is no need to wonder why we explicitly pass __GFP_ZERO to kmalloc_array.

Mostly a matter of taste.
I prefer this part remain unchanged.

Regards,
Richard


'devm_kcalloc' is inlined, so the binary should be exactly the same. >
CJ

'ctrl->genpool' can not be NULL, so axe a useless test in the remove
function.

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
  drivers/firmware/stratix10-svc.c | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index 739004398877..c228337cb0a1 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -1002,8 +1002,7 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
      if (!controller)
          return -ENOMEM;
  -    chans = devm_kmalloc_array(dev, SVC_NUM_CHANNEL,
-                   sizeof(*chans), GFP_KERNEL | __GFP_ZERO);
+    chans = devm_kcalloc(dev, SVC_NUM_CHANNEL, sizeof(*chans), GFP_KERNEL);
      if (!chans)
          return -ENOMEM;
  @@ -1086,8 +1085,7 @@ static int stratix10_svc_drv_remove(struct platform_device *pdev)
          kthread_stop(ctrl->task);
          ctrl->task = NULL;
      }
-    if (ctrl->genpool)
-        gen_pool_destroy(ctrl->genpool);
+    gen_pool_destroy(ctrl->genpool);
      list_del(&ctrl->node);
        return 0;


Regards,
Richard





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