On Tue, Nov 14, 2023 at 6:55 AM Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote: > From: Justin Stitt <justinstitt@xxxxxxxxxx> > > When building with clang 18 I see the following warning: > | drivers/pci/controller/pcie-iproc-platform.c:55:15: warning: cast to smaller > | integer type 'enum iproc_pcie_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] > | 55 | pcie->type = (enum iproc_pcie_type) of_device_get_match_data(dev); > > This is due to the fact that `of_device_get_match_data` returns a void* > while `enum iproc_pcie_type` has the size of an int. This leads to > truncation and possible data loss. Note that in this case there is no data loss, as the original value stored is of type enum iproc_pcie_type. > Link: https://github.com/ClangBuiltLinux/linux/issues/1910 > Reported-by: Nathan Chancellor <nathan@xxxxxxxxxx> > Signed-off-by: Justin Stitt <justinstitt@xxxxxxxxxx> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
