Hi Geert,
On Mon, 30 Nov 2020 09:57:43 +0100 Geert Uytterhoeven <geert+renesas@xxxxxxxxx> wrote:
>
> The R9A06G032 clock driver uses an array of packed structures to reduce
> kernel size. However, this array contains pointers, which are no longer
> aligned naturally, and cannot be relocated on PPC64. Hence when
> compile-testing this driver on PPC64 with CONFIG_RELOCATABLE=y (e.g.
> PowerPC allyesconfig), the following warnings are produced:
>
> WARNING: 136 bad relocations
> c000000000616be3 R_PPC64_UADDR64 .rodata+0x00000000000cf338
> c000000000616bfe R_PPC64_UADDR64 .rodata+0x00000000000cf370
> ...
>
> Fix this by dropping the __packed attribute from the r9a06g032_clkdesc
> definition, trading a small size increase for portability.
>
> This increases the 156-entry clock table by 1 byte per entry, but due to
> the compiler generating more efficient code for unpacked accesses, the
> net size increase is only 76 bytes (gcc 9.3.0 on arm32).
>
> Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Fixes: 4c3d88526eba2143 ("clk: renesas: Renesas R9A06G032 clock driver")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> ---
> v2:
> - Fix authorship.
> ---
> drivers/clk/renesas/r9a06g032-clocks.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Thanks.
I have added that to my fixes tree until it gets picked up elsewhere.
--
Cheers,
Stephen Rothwell
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