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 Follow Linaro: Facebook | Twitter | Blog