From: Lee Jones <lee.jones@linaro.org>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>,
Jean Delvare <jdelvare@suse.de>,
Tan Jui Nee <jui.nee.tan@intel.com>,
Jim Quinlan <james.quinlan@broadcom.com>,
Jonathan Yong <jonathan.yong@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-pci@vger.kernel.org, Jean Delvare <jdelvare@suse.com>,
Peter Tyser <ptyser@xes-inc.com>,
hdegoede@redhat.com, henning.schild@siemens.com
Subject: Re: [PATCH v1 5/7] mfd: lpc_ich: Switch to generic pci_p2sb_bar()
Date: Wed, 10 Mar 2021 12:57:26 +0000 [thread overview]
Message-ID: <20210310125726.GO701493@dell> (raw)
In-Reply-To: <YEi2DhLu+tpegdOR@smile.fi.intel.com>
On Wed, 10 Mar 2021, Andy Shevchenko wrote:
> On Wed, Mar 10, 2021 at 10:35:39AM +0000, Lee Jones wrote:
> > On Mon, 08 Mar 2021, Andy Shevchenko wrote:
> >
> > > Instead of open coding pci_p2sb_bar() functionality we are going to
> > > use generic library for that. There one more user of it is coming.
> > >
> > > Besides cleaning up it fixes a potential issue if, by some reason,
> > > SPI bar is 64-bit.
> >
> > Probably worth cleaning up the English in both these sections.
> >
> > Instead of open coding pci_p2sb_bar() functionality we are going to
> > use generic library. There is one more user en route.
> >
> > This is more than just a clean-up. It also fixes a potential issue
> > seen when SPI bar is 64-bit.
>
> Thanks!
>
> > Also worth briefly describing what that issue is I think.
>
> Current code works if and only if the PCI BAR of the hidden device is inside 4G
> address space. In case firmware decides to go above 4G, we will get a wrong
> address.
>
> Does it sound good enough?
Yes, that explains it, thanks.
> > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > > ---
> > > drivers/mfd/Kconfig | 1 +
> > > drivers/mfd/lpc_ich.c | 20 ++++++--------------
> > > 2 files changed, 7 insertions(+), 14 deletions(-)
> >
> > Code looks fine:
> >
> > For my own reference (apply this as-is to your sign-off block):
> >
> > Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
>
> Thanks for reviewing this series, can you have a look at the earlier sent [1]
> and [2]? First one has a regression fix.
Yes, thanks for the nudge. These were not in my TODO list.
> [1]: https://lore.kernel.org/lkml/20210302135620.89958-1-andriy.shevchenko@linux.intel.com/T/#u
> [2]: https://lore.kernel.org/lkml/20210301144222.31290-1-andriy.shevchenko@linux.intel.com/T/#u
>
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2021-03-10 12:58 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-08 12:20 [rfc, PATCH v1 0/7] PCI: introduce p2sb helper Andy Shevchenko
2021-03-08 12:20 ` [PATCH v1 1/7] PCI: Introduce pci_bus_*() printing macros when device is not available Andy Shevchenko
2021-03-10 14:57 ` Jean Delvare
2021-03-08 12:20 ` [PATCH v1 2/7] PCI: Convert __pci_read_base() to __pci_bus_read_base() Andy Shevchenko
2021-03-10 17:14 ` Christoph Hellwig
2021-03-08 12:20 ` [PATCH v1 3/7] PCI: New Primary to Sideband (P2SB) bridge support library Andy Shevchenko
2021-03-08 18:52 ` Bjorn Helgaas
2021-03-08 19:16 ` Andy Shevchenko
2021-03-09 1:42 ` Bjorn Helgaas
2021-03-09 8:42 ` Henning Schild
2021-04-01 15:45 ` Andy Shevchenko
2021-04-01 16:42 ` Bjorn Helgaas
2021-04-01 18:23 ` Andy Shevchenko
2021-04-01 18:44 ` Bjorn Helgaas
2021-07-12 12:15 ` Andy Shevchenko
2021-11-26 15:10 ` Andy Shevchenko
2021-04-02 13:09 ` Enrico Weigelt, metux IT consult
2021-04-06 13:40 ` Henning Schild
2021-07-12 12:11 ` Andy Shevchenko
2021-11-26 15:38 ` Andy Shevchenko
2021-11-29 21:07 ` Bjorn Helgaas
2021-12-08 17:51 ` Andy Shevchenko
2021-03-13 9:45 ` Henning Schild
2021-04-01 15:43 ` Andy Shevchenko
2021-04-01 18:06 ` Mika Westerberg
2021-04-01 18:22 ` Andy Shevchenko
2021-04-01 18:32 ` Mika Westerberg
2021-07-12 12:13 ` Andy Shevchenko
2021-03-08 12:20 ` [PATCH v1 4/7] mfd: lpc_ich: Factor out lpc_ich_enable_spi_write() Andy Shevchenko
2021-03-10 10:29 ` Lee Jones
2021-03-08 12:20 ` [PATCH v1 5/7] mfd: lpc_ich: Switch to generic pci_p2sb_bar() Andy Shevchenko
2021-03-10 10:35 ` Lee Jones
2021-03-10 12:05 ` Andy Shevchenko
2021-03-10 12:57 ` Lee Jones [this message]
2021-03-08 12:20 ` [PATCH v1 6/7] mfd: lpc_ich: Add support for pinctrl in non-ACPI system Andy Shevchenko
2021-03-10 10:27 ` Lee Jones
2021-04-12 16:01 ` Henning Schild
2021-04-12 16:40 ` Henning Schild
2021-04-12 16:59 ` Andy Shevchenko
2021-04-12 17:16 ` Henning Schild
2021-04-12 17:34 ` Andy Shevchenko
2021-04-13 6:47 ` Henning Schild
2021-04-12 16:51 ` Andy Shevchenko
2021-04-12 17:27 ` Henning Schild
2021-04-12 17:41 ` Andy Shevchenko
2021-03-08 12:20 ` [PATCH v1 7/7] i2c: i801: convert to use common P2SB accessor Andy Shevchenko
2021-03-10 14:51 ` Jean Delvare
2021-12-21 15:08 ` Andy Shevchenko
2021-03-13 9:25 ` [rfc, PATCH v1 0/7] PCI: introduce p2sb helper Henning Schild
2021-06-10 9:02 ` Henning Schild
2021-06-10 10:14 ` Andy Shevchenko
2021-06-10 13:48 ` Henning Schild
2021-06-10 14:04 ` Andy Shevchenko
2021-11-26 15:43 ` Andy Shevchenko
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