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Date: Wed, 29 Mar 2017 18:33:22 +0200 From: Hans de Goede <hdegoede@...hat.com> To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Dmitry Torokhov <dmitry.torokhov@...il.com>, Linus Walleij <linus.walleij@...aro.org> Cc: Alexandre Courbot <gnurou@...il.com>, Mika Westerberg <mika.westerberg@...ux.intel.com>, "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] ACPI / gpio: do not fall back to parsing _CRS when we get a deferral HI, On 28-03-17 17:04, Andy Shevchenko wrote: > On Thu, 2017-03-23 at 13:21 -0700, Dmitry Torokhov wrote: >> If, while locating GPIOs by name, we get probe deferral, we should >> immediately report it to caller rather than trying to fall back to >> parsing >> unnamed GPIOs from _CRS block. > > +Cc: Hans. > > Hans, do have any objections on this? Would you ideally give your > Tested-by? Looks good to me and also does not seem to break anything on my test devices, so: Acked-and-Tested-by: Hans de Goede <hdegoede@...hat.com> Regards, Hans > >> >> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com> >> --- >> drivers/gpio/gpiolib-acpi.c | 4 +++- >> 1 file changed, 3 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c >> index a3faefa44f68..d3f9f028a37b 100644 >> --- a/drivers/gpio/gpiolib-acpi.c >> +++ b/drivers/gpio/gpiolib-acpi.c >> @@ -572,8 +572,10 @@ struct gpio_desc *acpi_find_gpio(struct device >> *dev, >> } >> >> desc = acpi_get_gpiod_by_index(adev, propname, idx, >> &info); >> - if (!IS_ERR(desc) || (PTR_ERR(desc) == >> -EPROBE_DEFER)) >> + if (!IS_ERR(desc)) >> break; >> + if (PTR_ERR(desc) == -EPROBE_DEFER) >> + return ERR_CAST(desc); >> } >> >> /* Then from plain _CRS GPIOs */ >> -- >> 2.12.1.500.gab5fba24ee-goog >> >> >
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