From: Nathan Chancellor <natechancellor@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: isdn@linux-pingi.de, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, yamada.masahiro@socionext.com
Subject: Re: [PATCH v2] isdn: hfc_{pci,sx}: Avoid empty body if statements
Date: Thu, 18 Oct 2018 18:01:34 -0700 [thread overview]
Message-ID: <20181019010134.GA30592@flashbox> (raw)
In-Reply-To: <20181018.175058.827953425036498775.davem@davemloft.net>
On Thu, Oct 18, 2018 at 05:50:58PM -0700, David Miller wrote:
> From: Nathan Chancellor <natechancellor@gmail.com>
> Date: Thu, 18 Oct 2018 17:42:51 -0700
>
> > On Thu, Oct 18, 2018 at 05:23:10PM -0700, David Miller wrote:
> >> From: Nathan Chancellor <natechancellor@gmail.com>
> >> Date: Thu, 18 Oct 2018 17:21:17 -0700
> >>
> >> > Thanks for the review, I went ahead and compiled with the following diff
> >> > on top of v2 and got no warnings from Clang, GCC, or sparse, does this
> >> > seem satisfactory for v3?
> >>
> >> Well, one thing I notice.
> >>
> >
> >> > @@ -86,7 +86,7 @@ release_io_hfcpci(struct IsdnCardState *cs)
> >> > pci_free_consistent(cs->hw.hfcpci.dev, 0x8000,
> >> > cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma);
> >> > cs->hw.hfcpci.fifos = NULL;
> >> > - iounmap((void *)cs->hw.hfcpci.pci_io);
> >> > + iounmap(cs->hw.hfcpci.pci_io);
> >> > }
> >>
> >> Driver uses iounmap().
> >>
> >> > @@ -1692,7 +1692,7 @@ setup_hfcpci(struct IsdnCard *card)
> >> > printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
> >> > return (0);
> >> > }
> >> > - cs->hw.hfcpci.pci_io = (char *)(unsigned long)dev_hfcpci->resource[1].start;
> >> > + cs->hw.hfcpci.pci_io = (void __iomem *)(unsigned long)dev_hfcpci->resource[1].start;
> >> > printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);
> >>
> >> But does not use iomap(). You won't need any cast here if it did use
> >> iomap() properly.
> >>
> >> Thanks.
> >
> > So this?
>
> That's definitely a lot better, yes!
>
> I wonder what exactly it is checking there though. I guess it wants to see if the
> resource->start value is zero and bail with an error it so.
>
> Anyways, this code has been like this for ages and what you are proposing is
> definitely a significant improvement.
>
> Thanks.
I was thinking the same thing. I think ioremap will still error out if
start is zero so this should be fine. I'll roll all of this up into v3,
thanks a lot for the review!
Nathan
next prev parent reply other threads:[~2018-10-19 1:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 18:06 [PATCH] isdn: hfc_{pci,sx}: Avoid empty body if statements and use proper register accessors Nathan Chancellor
2018-10-18 3:23 ` Masahiro Yamada
2018-10-18 3:34 ` Nathan Chancellor
2018-10-18 3:49 ` [PATCH v2] isdn: hfc_{pci,sx}: Avoid empty body if statements Nathan Chancellor
2018-10-18 22:42 ` David Miller
2018-10-19 0:21 ` Nathan Chancellor
2018-10-19 0:23 ` David Miller
2018-10-19 0:42 ` Nathan Chancellor
2018-10-19 0:50 ` David Miller
2018-10-19 1:01 ` Nathan Chancellor [this message]
2018-10-19 1:11 ` [PATCH v3] " Nathan Chancellor
2018-10-23 2:25 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181019010134.GA30592@flashbox \
--to=natechancellor@gmail.com \
--cc=davem@davemloft.net \
--cc=isdn@linux-pingi.de \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=yamada.masahiro@socionext.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).