Re: [PATCH v5 3/4] mfd: intel-lpss: use devm_ioremap_uc for MMIO

2019-10-22 Thread Roman Gilg
On Thu, Oct 17, 2019 at 7:48 PM Tuowen Zhao wrote: > > Some BIOS erroneously specifies write-combining BAR for intel-lpss-pci > in MTRR. This will cause the system to hang during boot. If possible, > this bug could be corrected with a firmware update. > > This patch use devm_ioremap_uc to overwrit

[PATCH v5 3/4] mfd: intel-lpss: use devm_ioremap_uc for MMIO

2019-10-16 Thread Tuowen Zhao
Some BIOS erroneously specifies write-combining BAR for intel-lpss-pci in MTRR. This will cause the system to hang during boot. If possible, this bug could be corrected with a firmware update. This patch use devm_ioremap_uc to overwrite/ignore the MTRR settings by forcing the use of strongly uncac