Re: WARNING: CPU: 0 PID: 2623 at drivers/pnp/pnpacpi/core.c:96 pnpacpi_set_resource
From: Vinson Lee
Date: Tue Jul 29 2014 - 17:52:38 EST
On Tue, Jul 29, 2014 at 2:10 PM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
> On Tuesday, July 29, 2014 11:13:55 AM Vinson Lee wrote:
>> On Tue, Jul 29, 2014 at 2:53 AM, William Dauchy <wdauchy@xxxxxxxxx> wrote:
>> > Hi Vinson,
>> > On Mon, Jul 28, 2014 at 9:11 PM, Vinson Lee <vlee@xxxxxxxxxxxxxxxx> wrote:
>> >> The warning first happens with 3.14-rc1. The warning does not occur with 3.13.0.
>> > Hitting the same issue here with a similar trace on 3.14.x. Did you
>> > start bisecting?
>> > Regards,
>> > --
>> > William
>> I bisected the warning that I'm seeing to this commit.
>> commit 202317a573b20d77a9abb7c16a3fd5b40cef3d9d
>> Author: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
>> Date: Fri Nov 22 21:54:37 2013 +0100
>> ACPI / scan: Add acpi_device objects for all device nodes in the namespace
> Does the appended patch make any difference?
> drivers/pnp/pnpacpi/core.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
> Index: linux-pm/drivers/pnp/pnpacpi/core.c
> --- linux-pm.orig/drivers/pnp/pnpacpi/core.c
> +++ linux-pm/drivers/pnp/pnpacpi/core.c
> @@ -319,8 +319,7 @@ static int __init acpi_pnp_match(struct
> struct pnp_dev *pnp = _pnp;
> /* true means it matched */
> - return !acpi->physical_node_count
> - && compare_pnp_id(pnp->id, acpi_device_hid(acpi));
> + return pnp->data == acpi;
> static struct acpi_device * __init acpi_pnp_find_companion(struct device *dev)
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Yes, with the patch on top of 3.16-rc7 I do not see the warning.
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