Re: [PATCH] spi: spi-geni-qcom: enable SPI_CONTROLLER_MUST_TX for GPI DMA mode

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On Thu, Jun 29, 2023 at 12:58:47PM +0300, Dmitry Baryshkov wrote:
> The GPI DMA mode requires for TX DMA to be prepared. Force SPI core to
> provide TX buffer even if the caller didn't provide one by setting the
> SPI_CONTROLLER_MUST_TX flag.
> 
> Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
> Mem abort info:
>   ESR = 0x0000000096000004
>   EC = 0x25: DABT (current EL), IL = 32 bits
>   SET = 0, FnV = 0
>   EA = 0, S1PTW = 0

Please think hard before including complete backtraces in upstream
reports, they are very large and contain almost no useful information
relative to their size so often obscure the relevant content in your
message. If part of the backtrace is usefully illustrative (it often is
for search engines if nothing else) then it's usually better to pull out
the relevant sections.

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