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Date: Fri, 1 May 2020 17:48:40 +0200 From: Christophe JAILLET <christophe.jaillet@...adoo.fr> To: Richard Gong <richard.gong@...ux.intel.com>, gregkh@...uxfoundation.org, atull@...nel.org Cc: linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org Subject: Re: [PATCH 4/4 v2] firmware: stratix10-svc: Slightly simplify code 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. '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@...adoo.fr> >> --- >> 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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