Re: [PATCH v3 2/2] mfd: intel-lpss: use devm_ioremap_uc for MMIO

2019-10-14 Thread Lee Jones
On Thu, 10 Oct 2019, Luis Chamberlain wrote: > On Wed, Oct 09, 2019 at 09:03:35PM -0600, 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

Re: [PATCH v3 2/2] mfd: intel-lpss: use devm_ioremap_uc for MMIO

2019-10-10 Thread Luis Chamberlain
On Wed, Oct 09, 2019 at 09:03:35PM -0600, 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

[PATCH v3 2/2] mfd: intel-lpss: use devm_ioremap_uc for MMIO

2019-10-09 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