Thread (54 messages) 54 messages, 9 authors, 2021-12-21

Re: [PATCH v1 5/7] mfd: lpc_ich: Switch to generic pci_p2sb_bar()

From: Lee Jones <hidden>
Date: 2021-03-10 12:58:13
Also in: linux-pci, lkml

On Wed, 10 Mar 2021, Andy Shevchenko wrote:
On Wed, Mar 10, 2021 at 10:35:39AM +0000, Lee Jones wrote:
quoted
On Mon, 08 Mar 2021, Andy Shevchenko wrote:
quoted
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!
quoted
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.
quoted
quoted
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 [off-list ref]
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 (local)
[2]: https://lore.kernel.org/lkml/20210301144222.31290-1-andriy.shevchenko@linux.intel.com/T/#u (local)
-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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