linux-kernel - Re: [PATCH 1/1] mfd: core: fix ACPI child matching by _HID/

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Date:	Mon, 21 Mar 2016 11:54:47 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Irina Tirdea <irina.tirdea@...el.com>
Cc:	linux-kernel@...r.kernel.org,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Octavian Purdila <octavian.purdila@...el.com>
Subject: Re: [PATCH 1/1] mfd: core: fix ACPI child matching by _HID/_CID

On Sun, 13 Mar 2016, Irina Tirdea wrote:

> If MDF child devices have separate ACPI nodes identified
> by _HID/_CID, they will not be assigned the intended
> ACPI companion.
> 
> acpi_match_device_ids will return 0 if a the child device
> matches the _HID/_CID, so this patch changes the matching
> condition to check for 0 on success.
> 
> Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
> ---
>  drivers/mfd/mfd-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

I've fixed the $SUBJECT line to be more consistent with the subsystem
style for you this time.  Please pay more attention to that in the
future.

`git log --oneline -- $SUBSYSTEM` helps with this.

Patch applied, thanks.

> diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
> index 88bd1b1..409da01 100644
> --- a/drivers/mfd/mfd-core.c
> +++ b/drivers/mfd/mfd-core.c
> @@ -107,7 +107,7 @@ static void mfd_acpi_add_device(const struct mfd_cell *cell,
>  
>  			strlcpy(ids[0].id, match->pnpid, sizeof(ids[0].id));
>  			list_for_each_entry(child, &parent->children, node) {
> -				if (acpi_match_device_ids(child, ids)) {
> +				if (!acpi_match_device_ids(child, ids)) {
>  					adev = child;
>  					break;
>  				}

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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