Messages in this thread | | | Date | Fri, 5 Feb 2021 13:29:42 +0000 | From | Mark Brown <> | Subject | Re: [PATCH 1/8] spi: stm32: properly handle 0 byte transfer |
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On Fri, Feb 05, 2021 at 12:08:55PM +0100, Alain Volmat wrote: > On 0 byte transfer request, return straight from the > xfer function after finalizing the transfer.
> + if (transfer->len == 0) { > + spi_finalize_current_transfer(master); > + return 0;
The driver only needs to finalize the transfer if it returned a value greater than 0, returning 0 indicates that the transfer is already done. [unhandled content-type:application/pgp-signature] | |