Paul Davey 60b45fffbe bus: mhi: Fix MHI DMA structure endianness ... commit ed2d980503 upstream. The MHI driver does not work on big endian architectures. The controller never transitions into mission mode. This appears to be due to the modem device expecting the various contexts and transfer rings to have fields in little endian order in memory, but the driver constructs them in native endianness. Fix MHI event, channel and command contexts and TRE handling macros to use explicit conversion to little endian. Mark fields in relevant structures as little endian to document this requirement. Fixes: a6e2e3522f ("bus: mhi: core: Add support for PM state transitions") Fixes: 6cd330ae76 ("bus: mhi: core: Add support for ringing channel/event ring doorbells") Cc: stable@vger.kernel.org Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Alex Elder <elder@linaro.org> Signed-off-by: Paul Davey <paul.davey@alliedtelesis.co.nz> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20220301160308.107452-4-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-04-08 13:57:14 +02:00
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core	bus: mhi: Fix MHI DMA structure endianness	2022-04-08 13:57:14 +02:00
Kconfig	bus: mhi: Add MHI PCI support for WWAN modems	2020-11-18 15:20:34 +05:30
Makefile	bus: mhi: Add MHI PCI support for WWAN modems	2020-11-18 15:20:34 +05:30
pci_generic.c	bus: mhi: pci_generic: Add mru_default for Quectel EM1xx series	2022-04-08 13:57:14 +02:00