linux-kernel - Re: [PATCH] ntb: idt: fix error check in ntb_hw

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Date:   Sun, 6 Dec 2020 18:25:44 -0500
From:   Jon Mason <jdmason@...zu.us>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     Wang Qing <wangqing@...o.com>, Dave Jiang <dave.jiang@...el.com>,
        Allen Hubbe <allenbh@...il.com>, linux-ntb@...glegroups.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ntb: idt: fix error check in ntb_hw_idt.c

On Tue, Nov 10, 2020 at 09:33:40PM +0300, Serge Semin wrote:
> Hello Wang
> 
> On Fri, Nov 06, 2020 at 05:43:31PM +0800, Wang Qing wrote:
> > idt_create_dev never return NULL and fix smatch warning.
> 
> Thanks for submitting this. For the both changes
> Acked-by: Serge Semin <fancer.lancer@...il.com>

Applied to the ntb branch.

Thanks,
Jon

> 
> They are mostly unrelated though. If they weren't trivial I'd have
> suggested to split them up into the dedicated patches. Since they
> aren't I suppose leaving the patch 'as is' is ok, unless the subsystem
> maintainer thinks differently.
> 
> -Sergey
> 
> > 
> > Signed-off-by: Wang Qing <wangqing@...o.com>
> > ---
> >  drivers/ntb/hw/idt/ntb_hw_idt.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/ntb/hw/idt/ntb_hw_idt.c b/drivers/ntb/hw/idt/ntb_hw_idt.c
> > index d54261f..e7a4c2a
> > --- a/drivers/ntb/hw/idt/ntb_hw_idt.c
> > +++ b/drivers/ntb/hw/idt/ntb_hw_idt.c
> > @@ -2511,7 +2511,7 @@ static int idt_init_dbgfs(struct idt_ntb_dev *ndev)
> >  	/* If the top directory is not created then do nothing */
> >  	if (IS_ERR_OR_NULL(dbgfs_topdir)) {
> >  		dev_info(&ndev->ntb.pdev->dev, "Top DebugFS directory absent");
> > -		return PTR_ERR(dbgfs_topdir);
> > +		return PTR_ERR_OR_ZERO(dbgfs_topdir);
> >  	}
> >  
> >  	/* Create the info file node */
> > @@ -2756,7 +2756,7 @@ static int idt_pci_probe(struct pci_dev *pdev,
> >  
> >  	/* Allocate the memory for IDT NTB device data */
> >  	ndev = idt_create_dev(pdev, id);
> > -	if (IS_ERR_OR_NULL(ndev))
> > +	if (IS_ERR(ndev))
> >  		return PTR_ERR(ndev);
> >  
> >  	/* Initialize the basic PCI subsystem of the device */
> > -- 
> > 2.7.4
> >