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Date: Tue, 28 Jul 2015 08:48:17 +0100 From: Lee Jones <lee.jones@...aro.org> To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Cc: linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Vinod Koul <vinod.koul@...el.com>, Mika Westerberg <mika.westerberg@...ux.intel.com>, linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org, Heikki Krogerus <heikki.krogerus@...ux.intel.com>, Jarkko Nikula <jarkko.nikula@...ux.intel.com>, "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>, mturquette@...libre.com, sboyd@...eaurora.org Subject: Re: [PATCH v6 6/8] mfd: make mfd_remove_devices() iterate in reverse order On Mon, 27 Jul 2015, Andy Shevchenko wrote: > The newly introduced device_for_each_child_reverse() would be used when MFD > core removes the device. > > After this patch applied the devices will be removed in a reversed order. This > behaviour is useful when devices have implicit dependency on order, i.e. > consider MFD device with serial bus controller, such as SPI, and DMA IP that is > attached to serial bus controller: before remove the DMA driver we have to be > ensured that no DMA transfers is ongoing and the requested channel are unused. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> > --- > drivers/mfd/mfd-core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Applied, thanks. Pull request to follow. > diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c > index 14fd5cb..c17635d 100644 > --- a/drivers/mfd/mfd-core.c > +++ b/drivers/mfd/mfd-core.c > @@ -302,7 +302,7 @@ void mfd_remove_devices(struct device *parent) > { > atomic_t *cnts = NULL; > > - device_for_each_child(parent, &cnts, mfd_remove_devices_fn); > + device_for_each_child_reverse(parent, &cnts, mfd_remove_devices_fn); > kfree(cnts); > } > EXPORT_SYMBOL(mfd_remove_devices); -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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