Hi, Geert,
On 2/20/25 18:00, Geert Uytterhoeven wrote:
On Sat, 15 Feb 2025 at 14:18, Claudiu <claudiu.beznea@xxxxxxxxx> wrote:
From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
The matching data for the rz-sysc driver is marked with __initconst, which
means it is discarded after initialization. Because of this, attempting to
unbind/bind the driver through sysfs after system boot can lead to "Unable
to handle kernel paging request at virtual address" errors due to accessing
freed memory.
Since the System Controller (SYSC) is an essential block for Renesas SoCs,
suppress binding attributes to prevent them being exposed in sysfs,
avoiding potential issues.
Fixes: 1660e5ea6a3e ("soc: renesas: Add SYSC driver for Renesas RZ family")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
i.e. will queue in renesas-devel for v6.15.
drivers/soc/renesas/rz-sysc.c | 1 +
Looks like there are more opportunities for similar changes?
For the other Renesas drivers I wasn't sure if this is the desired way.
Thank you,
Claudiu
Gr{oetje,eeting}s,
Geert
