linux-pci.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Christoph Hellwig <hch@infradead.org>
To: Jon Derrick <jonathan.derrick@intel.com>
Cc: linux-pci@vger.kernel.org, Bjorn Helgaas <helgaas@kernel.org>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Russell King <rmk+kernel@armlinux.org.uk>
Subject: Re: [PATCH 3/5] PCI: pci-bridge-emul: Convert to GENMASK and BIT
Date: Thu, 16 Apr 2020 00:30:04 -0700	[thread overview]
Message-ID: <20200416073004.GB32000@infradead.org> (raw)
In-Reply-To: <20200414203005.5166-4-jonathan.derrick@intel.com>

On Tue, Apr 14, 2020 at 04:30:03PM -0400, Jon Derrick wrote:
> In order to make pci-bridge-emul easier to keep up-to-date with new PCIe
> features, convert all named register bits to GENMASK and BIT pairs. This
> patch doesn't alter any of the PCI configuration space as these bits are
> fully defined.
> 
> Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
> ---
>  drivers/pci/pci-bridge-emul.c | 17 ++++++-----------
>  1 file changed, 6 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c
> index c00c30ffb198..bbcccadca85e 100644
> --- a/drivers/pci/pci-bridge-emul.c
> +++ b/drivers/pci/pci-bridge-emul.c
> @@ -221,11 +221,8 @@ static const struct pci_bridge_reg_behavior pcie_cap_regs_behavior[] = {
>  		 * as reserved bits.
>  		 */
>  		.rw = GENMASK(12, 0),
> -		.w1c = (PCI_EXP_SLTSTA_ABP | PCI_EXP_SLTSTA_PFD |
> -			PCI_EXP_SLTSTA_MRLSC | PCI_EXP_SLTSTA_PDC |
> -			PCI_EXP_SLTSTA_CC | PCI_EXP_SLTSTA_DLLSC) << 16,
> -		.ro = (PCI_EXP_SLTSTA_MRLSS | PCI_EXP_SLTSTA_PDS |
> -		       PCI_EXP_SLTSTA_EIS) << 16,
> +		.w1c = (BIT(8) | GENMASK(4, 0)) << 16,
> +		.ro = GENMASK(7, 5) << 16,

FYI, I find the previous version a lot more readable.  Or rather I find
it readable while the new one looks like intentionally obsfucated
garbage to me.

  reply	other threads:[~2020-04-16  7:30 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-14 20:30 [PATCH 0/5] PCI Bridge Emulation changes for v5.8 Jon Derrick
2020-04-14 20:30 ` [PATCH 1/5] PCI: pci-bridge-emul: Fix PCIe bit conflicts Jon Derrick
2020-05-07 19:48   ` Rob Herring
2020-04-14 20:30 ` [PATCH 2/5] PCI: pci-bridge-emul: Fix Root Cap/Status comment Jon Derrick
2020-05-07 19:48   ` Rob Herring
2020-04-14 20:30 ` [PATCH 3/5] PCI: pci-bridge-emul: Convert to GENMASK and BIT Jon Derrick
2020-04-16  7:30   ` Christoph Hellwig [this message]
2020-04-16 14:35     ` Derrick, Jonathan
2020-05-11 10:06       ` Lorenzo Pieralisi
2020-05-11 15:11         ` Derrick, Jonathan
2020-04-14 20:30 ` [PATCH 4/5] PCI: pci-bridge-emul: Update for PCIe 5.0 r1.0 Jon Derrick
2020-05-07 19:49   ` Rob Herring
2020-04-14 20:30 ` [PATCH 5/5] PCI: pci-bridge-emul: Eliminate the 'reserved' member Jon Derrick
2020-05-07 20:00   ` Rob Herring

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=20200416073004.GB32000@infradead.org \
    --to=hch@infradead.org \
    --cc=helgaas@kernel.org \
    --cc=jonathan.derrick@intel.com \
    --cc=linux-pci@vger.kernel.org \
    --cc=rmk+kernel@armlinux.org.uk \
    --cc=thomas.petazzoni@bootlin.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).