On Tue, Jul 17, 2018 at 05:24:17PM +0200, Niklas Söderlund wrote: > The datasheet does not document any registers to control drive strength, > and no drive strength registers are for this reason described for this > SoC. The flags indicating that drive strength can be controlled are > however set for some pins in the driver. > > This leads to a NULL pointer dereference when the sh-pfc core tries to > access the struct describing the drive strength registers, for example > when reading the sysfs file pinconf-pins. > > Fix this by removing the SH_PFC_PIN_CFG_DRIVE_STRENGTH from all pins > > Fixes: b92ac66a1819602b ("pinctrl: sh-pfc: Add R8A77970 PFC support") > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> > > --- > drivers/pinctrl/sh-pfc/pfc-r8a77970.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > --- > > Hi, > > This is a backport of commit 550b6f7e8cf93fc2753aa01e655ed5471012ab5a > from Linusw linux-pinctrl.git tree. It's applicable for v4.16 and v4.17. 4.16.y is long end-of-life, nothing I can do there anymore, sorry. > This is my first backport patch submission for stable, please let me > know if I can improve the format of this patch commit message or subject > in any way. Works just fine, now queued up for 4.17.y, thanks! greg k-h