Re: [PATCH v3 0/2] bus: mhi: Fix MHI on big endian architectures

Manivannan Sadhasivam
2021-07-16T05:43:53Z

On Tue, Jun 29, 2021 at 03:53:55PM +1200, Paul Davey wrote:
> I encountered some problems getting the MHI driver to work on an Octeon
> 3 platform these seem to all be related to endianness issues. The modem
> interface appears to require the DMA structures to be in little endian,
> however the MHI core driver was assembling them in native endianness.
>
> Using little endian explicitly allows the interface to function as
> expected.
>

Please add fixes tag and Cc stable for all the patches.

Thanks,
Mani

> Changes in v3:
> - removed change of doorbell helper functions db_val type from
> dma_addr_t to __le64 favouring doing conversion only when writing to
> context wp fields.
> Changes in v2:
> - use __fls instead of find_last_bit in pm_state conversion patch as
> requested by Hemant Kumar <hemantk@codeaurora.org>
>
> Paul Davey (2):
> bus: mhi: Fix pm_state conversion to string
> bus: mhi: Fix MHI DMA structure endianness
>
> drivers/bus/mhi/core/debugfs.c | 26 +++----
> drivers/bus/mhi/core/init.c | 43 ++++++------
> drivers/bus/mhi/core/internal.h | 119 ++++++++++++++++----------------
> drivers/bus/mhi/core/main.c | 22 +++---
> drivers/bus/mhi/core/pm.c | 4 +-
> 5 files changed, 109 insertions(+), 105 deletions(-)
>
> --
> 2.32.0
>