Re: linux-next: build warning after merge of the spi tree

Jean Pihet
2020-01-15T09:10:25Z

Hi Stephen,

I did not have this warning, it may be a combination of compiler
version and build flags. Do you need a fixup patch for it?

Thanks,
Jean

On Wed, Jan 15, 2020 at 3:23 AM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Hi all,
>
> After merging the spi tree, today's linux-next build (x86_64 allmodconfig)
> produced this warning:
>
> drivers/spi/spi-ti-qspi.c: In function 'ti_qspi_start_transfer_one':
> drivers/spi/spi-ti-qspi.c:392:8: warning: 'rx_wlen' may be used uninitialized in this function [-Wmaybe-uninitialized]
> 392 | if (rx_wlen >= 32)
> | ^
> drivers/spi/spi-ti-qspi.c:318:12: note: 'rx_wlen' was declared here
> 318 | u8 rxlen, rx_wlen;
> | ^~~~~~~
>
> Introduced by commit
>
> e7cc5cfbea4c ("spi: spi-ti-qspi: optimize byte-transfers")
>
> Looks like it may be a false positive.
>
> --
> Cheers,
> Stephen Rothwell