From: David Marchand <david.marchand@redhat.com>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: dev@dpdk.org, thomas@monjalon.net, ferruh.yigit@amd.com,
chenbo.xia@intel.com, nipun.gupta@amd.com
Subject: Re: [PATCH 02/14] bus/pci: add const to some experimental API
Date: Thu, 3 Aug 2023 13:50:17 +0200 [thread overview]
Message-ID: <CAJFAV8wogNgnC9vUVT-0Xz6Zr3rVUP0_HmgZriEon51t7BNt1Q@mail.gmail.com> (raw)
In-Reply-To: <ZMt3h8sLfsPbe9hQ@bricha3-MOBL.ger.corp.intel.com>
On Thu, Aug 3, 2023 at 11:47 AM Bruce Richardson
<bruce.richardson@intel.com> wrote:
>
> On Thu, Aug 03, 2023 at 09:50:25AM +0200, David Marchand wrote:
> > Those functions are fine with a const on the device pointer.
> >
> > Signed-off-by: David Marchand <david.marchand@redhat.com>
> > ---
> > drivers/bus/pci/pci_common.c | 4 ++--
> > drivers/bus/pci/rte_bus_pci.h | 4 ++--
> > 2 files changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c
> > index 52404ab0fe..382b0b8946 100644
> > --- a/drivers/bus/pci/pci_common.c
> > +++ b/drivers/bus/pci/pci_common.c
> > @@ -814,7 +814,7 @@ rte_pci_get_iommu_class(void)
> > }
> >
> > off_t
> > -rte_pci_find_ext_capability(struct rte_pci_device *dev, uint32_t cap)
> > +rte_pci_find_ext_capability(const struct rte_pci_device *dev, uint32_t cap)
> > {
> > off_t offset = RTE_PCI_CFG_SPACE_SIZE;
> > uint32_t header;
> > @@ -857,7 +857,7 @@ rte_pci_find_ext_capability(struct rte_pci_device *dev, uint32_t cap)
> > }
> >
> > int
> > -rte_pci_set_bus_master(struct rte_pci_device *dev, bool enable)
> > +rte_pci_set_bus_master(const struct rte_pci_device *dev, bool enable)
> > {
> > uint16_t old_cmd, cmd;
> >
>
> While generally I'm a big fan of using const everywhere we can, I wonder if
> this is confusing here, since you are changing a setting, i.e. it's not
> a read-only function.
Changing a setting in the underlying hardware, yes, but the C object
is left untouched.
--
David Marchand
next prev parent reply other threads:[~2023-08-03 11:50 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-03 7:50 [PATCH 00/14] Cleanup PCI(e) drivers David Marchand
2023-08-03 7:50 ` [PATCH 01/14] drivers: remove duplicated PCI master control David Marchand
2023-08-03 9:45 ` Bruce Richardson
2023-10-07 2:53 ` fengchengwen
2023-08-03 7:50 ` [PATCH 02/14] bus/pci: add const to some experimental API David Marchand
2023-08-03 9:46 ` Bruce Richardson
2023-08-03 11:50 ` David Marchand [this message]
2023-08-03 7:50 ` [PATCH 03/14] bus/pci: find PCI capability David Marchand
2023-08-03 9:49 ` Bruce Richardson
2023-08-03 9:52 ` Bruce Richardson
2023-08-03 11:49 ` David Marchand
2023-08-03 7:50 ` [PATCH 04/14] pci: define some capability constants David Marchand
2023-08-03 9:51 ` Bruce Richardson
2023-08-03 7:50 ` [PATCH 05/14] pci: define some MSIX constants David Marchand
2023-08-03 9:53 ` Bruce Richardson
2023-08-03 7:50 ` [PATCH 06/14] pci: define some command constants David Marchand
2023-08-03 9:57 ` Bruce Richardson
2023-08-03 11:51 ` David Marchand
2023-08-08 9:20 ` David Marchand
2023-08-08 10:08 ` Bruce Richardson
2023-08-22 19:23 ` Adam Hassick
2023-08-03 7:50 ` [PATCH 07/14] pci: define some BAR constants David Marchand
2023-08-03 9:58 ` Bruce Richardson
2023-08-03 7:50 ` [PATCH 08/14] pci: define some PM constants David Marchand
2023-08-03 9:59 ` Bruce Richardson
2023-08-03 7:50 ` [PATCH 09/14] pci: define some PCIe constants David Marchand
2023-08-03 10:01 ` Bruce Richardson
2023-08-03 7:50 ` [PATCH 10/14] pci: define some extended capability constants David Marchand
2023-08-03 7:50 ` [PATCH 11/14] pci: define some ACS constants David Marchand
2023-08-03 7:50 ` [PATCH 12/14] pci: define some PRI constants David Marchand
2023-08-03 7:50 ` [PATCH 13/14] pci: define some AER constants David Marchand
2023-08-03 7:50 ` [PATCH 14/14] devtools: forbid inclusion of Linux header for PCI David Marchand
2023-08-03 10:03 ` [PATCH 00/14] Cleanup PCI(e) drivers Bruce Richardson
2023-08-21 11:35 ` [PATCH v2 00/15] " David Marchand
2023-08-21 11:35 ` [PATCH v2 01/15] drivers: remove duplicated PCI master control David Marchand
2023-09-06 13:02 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 02/15] bus/pci: add const to some experimental API David Marchand
2023-08-21 16:14 ` Tyler Retzlaff
2023-09-06 13:02 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 03/15] bus/pci: rework MSIX discovery with VFIO David Marchand
2023-09-06 13:03 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 04/15] bus/pci: find PCI capability David Marchand
2023-09-07 12:43 ` Xia, Chenbo
2023-09-14 12:29 ` David Marchand
2023-09-19 2:19 ` Xia, Chenbo
2023-09-19 9:00 ` David Marchand
2023-08-21 11:35 ` [PATCH v2 05/15] pci: define some capability constants David Marchand
2023-09-07 13:15 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 06/15] pci: define some MSIX constants David Marchand
2023-09-07 13:15 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 07/15] pci: define some command constants David Marchand
2023-09-07 13:15 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 08/15] pci: define some BAR constants David Marchand
2023-09-07 13:16 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 09/15] pci: define some PM constants David Marchand
2023-09-07 13:16 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 10/15] pci: define some PCIe constants David Marchand
2023-09-07 13:16 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 11/15] pci: define some extended capability constants David Marchand
2023-09-07 13:23 ` Xia, Chenbo
2023-08-21 11:35 ` [PATCH v2 12/15] pci: define some ACS constants David Marchand
2023-08-21 11:35 ` [PATCH v2 13/15] pci: define some PRI constants David Marchand
2023-08-21 11:35 ` [PATCH v2 14/15] pci: define some AER constants David Marchand
2023-08-21 11:35 ` [PATCH v2 15/15] devtools: forbid inclusion of Linux header for PCI David Marchand
2023-08-21 16:24 ` Tyler Retzlaff
2023-09-07 13:33 ` Xia, Chenbo
2023-08-22 15:30 ` [PATCH v2 00/15] Cleanup PCI(e) drivers Patrick Robb
2023-08-22 16:09 ` [PATCH 00/14] " Adam Hassick
2023-08-22 16:48 ` Adam Hassick
2023-08-24 15:44 ` Adam Hassick
2023-09-14 12:35 ` [PATCH v3 00/15] " David Marchand
2023-09-14 12:36 ` [PATCH v3 01/15] drivers: remove duplicated PCI master control David Marchand
2023-09-14 12:36 ` [PATCH v3 02/15] bus/pci: add const to some experimental API David Marchand
2023-09-14 12:36 ` [PATCH v3 03/15] bus/pci: rework MSIX discovery with VFIO David Marchand
2023-09-14 12:36 ` [PATCH v3 04/15] bus/pci: find PCI capability David Marchand
2023-09-19 2:33 ` Xia, Chenbo
2023-09-14 12:36 ` [PATCH v3 05/15] pci: define some capability constants David Marchand
2023-09-15 16:27 ` Sevincer, Abdullah
2023-09-14 12:36 ` [PATCH v3 06/15] pci: define some MSIX constants David Marchand
2023-09-14 12:36 ` [PATCH v3 07/15] pci: define some command constants David Marchand
2023-09-14 12:36 ` [PATCH v3 08/15] pci: define some BAR constants David Marchand
2023-09-14 12:36 ` [PATCH v3 09/15] pci: define some PM constants David Marchand
2023-09-14 12:36 ` [PATCH v3 10/15] pci: define some PCIe constants David Marchand
2023-09-15 16:26 ` Sevincer, Abdullah
2023-09-14 12:36 ` [PATCH v3 11/15] pci: define some extended capability constants David Marchand
2023-09-15 16:27 ` Sevincer, Abdullah
2023-09-14 12:36 ` [PATCH v3 12/15] pci: define some ACS constants David Marchand
2023-09-15 16:25 ` Sevincer, Abdullah
2023-09-19 2:35 ` Xia, Chenbo
2023-09-14 12:36 ` [PATCH v3 13/15] pci: define some PRI constants David Marchand
2023-09-15 16:21 ` Sevincer, Abdullah
2023-09-19 2:36 ` Xia, Chenbo
2023-09-14 12:36 ` [PATCH v3 14/15] pci: define some AER constants David Marchand
2023-09-15 16:26 ` Sevincer, Abdullah
2023-09-19 2:36 ` Xia, Chenbo
2023-09-14 12:36 ` [PATCH v3 15/15] devtools: forbid inclusion of Linux header for PCI David Marchand
2023-09-15 15:14 ` [PATCH v3 00/15] Cleanup PCI(e) drivers Stephen Hemminger
2023-09-19 12:41 ` David Marchand
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=CAJFAV8wogNgnC9vUVT-0Xz6Zr3rVUP0_HmgZriEon51t7BNt1Q@mail.gmail.com \
--to=david.marchand@redhat.com \
--cc=bruce.richardson@intel.com \
--cc=chenbo.xia@intel.com \
--cc=dev@dpdk.org \
--cc=ferruh.yigit@amd.com \
--cc=nipun.gupta@amd.com \
--cc=thomas@monjalon.net \
/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).