On Tue, Sep 26, 2017 at 04:07:45PM +0200, Petr Mladek wrote: > On Sun 2017-09-24 22:32:36, Greg Kroah-Hartman wrote: > > 4.13-stable review patch. If anyone has any objections, please let me know. > > > > ------------------ > > > > From: Daniel Drake <drake@xxxxxxxxxxxx> > > > > commit 79d2c8bede2c93f9432d7da0bc2f76a195c90fc0 upstream. > > > > The touchpad in the Asus laptop models X505BA/BP and X542BA/BP is > > unresponsive after suspend/resume. The following error appears during > > resume: > > > > i2c_hid i2c-ELAN1300:00: failed to reset device. > > > > The problem here is that i2c_hid does not notice the interrupt being > > generated at this point, because the GPIO is no longer configured > > for interrupts. > > > > Fix this by saving pinctrl-amd pin registers during suspend and > > restoring them at resume time. > > > > Based on code from pinctrl-intel. > > > > Signed-off-by: Daniel Drake <drake@xxxxxxxxxxxx> > > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > > > --- a/drivers/pinctrl/pinctrl-amd.c > > +++ b/drivers/pinctrl/pinctrl-amd.c > > @@ -725,6 +726,69 @@ static const struct pinconf_ops amd_pinc > > .pin_config_group_set = amd_pinconf_group_set, > > }; > > > > +#ifdef CONFIG_PM_SLEEP > > +static bool amd_gpio_should_save(struct amd_gpio *gpio_dev, unsigned int pin) > > +{ > > + const struct pin_desc *pd = pin_desc_get(gpio_dev->pctrl, pin); > > + > > + if (!pd) > > + return false; > > + > > + /* > > + * Only restore the pin if it is actually in use by the kernel (or > > + * by userspace). > > + */ > > + if (pd->mux_owner || pd->gpio_owner || > > This code causes a compilation error in the current Linus' tree > (4.14-rc2+). I guess that the same problem will be also in > older trees. > > IMHO, we need to select CONFIG_PINMUX for when CONFIG_PINCTRL_AMD > is selected. The following patch helped here: > > >From f83130d3b5c147b4d400922847ca2751d8020ab5 Mon Sep 17 00:00:00 2001 > From: Petr Mladek <pmladek@xxxxxxxx> > Date: Tue, 26 Sep 2017 15:51:28 +0200 > Subject: [PATCH] pinctrl/amd: Fix build dependency on pinmux code > MIME-Version: 1.0 > Content-Type: text/plain; charset=UTF-8 > Content-Transfer-Encoding: 8bit > > The commit 79d2c8bede2c93f943 ("pinctrl/amd: save pin registers over > suspend/resume") caused the following compilation errors: > > drivers/pinctrl/pinctrl-amd.c: In function ‘amd_gpio_should_save’: > drivers/pinctrl/pinctrl-amd.c:741:8: error: ‘const struct pin_desc’ has no member named ‘mux_owner’ > if (pd->mux_owner || pd->gpio_owner || > ^ > drivers/pinctrl/pinctrl-amd.c:741:25: error: ‘const struct pin_desc’ has no member named ‘gpio_owner’ > if (pd->mux_owner || pd->gpio_owner || > > We need to enable CONFIG_PINMUX for this driver as well. > > Fixes: 79d2c8bede2c93f943 ("pinctrl/amd: save pin registers over suspend/resume") > Signed-off-by: Petr Mladek <pmladek@xxxxxxxx> > --- > drivers/pinctrl/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig > index 1778cf4f81c7..82cd8b08d71f 100644 > --- a/drivers/pinctrl/Kconfig > +++ b/drivers/pinctrl/Kconfig > @@ -100,6 +100,7 @@ config PINCTRL_AMD > tristate "AMD GPIO pin control" > depends on GPIOLIB > select GPIOLIB_IRQCHIP > + select PINMUX > select PINCONF > select GENERIC_PINCONF > help > -- > 1.8.5.6 What is the commit id for this patch in Linus's tree? I don't see it there... thanks, greg k-h