Re: v3.14-rc1+: new error: "nsc-ircc, Wrong chip version ff"
From: Paul Bolle
Date: Mon Mar 17 2014 - 08:33:43 EST
Rafael J. Wysocki schreef op ma 17-03-2014 om 01:02 [+0100]:
> On Sunday, March 16, 2014 10:41:35 PM Paul Bolle wrote:
> > 2) What should I do to make that error go away?
> This is not an error, but a message whose log level is too high. It basically
> means "I found something, but I don't like it, so I'm not going to handle it."
I see. It's actually quite old and is mentioned rather often on the web.
I must have seen if before, when I actually used IrDA, but that's a few
years ago now.
> The messages come from nsc_ircc_setup(), which is called from nsc_ircc_open(),
> which in turn is called by nsc_ircc_init(), which is a module intialization
> function of the nsc-ircc module.
> I *guess* what happens is that the PNP layer creates a PNP device object
> for something it didn't create an object for previously, so I wonder if the
> patch below makes those messages go away?
No, they're still there (with this patch applied on top of v3.14-rc7).
> drivers/acpi/internal.h | 1 -
> drivers/pnp/pnpacpi/core.c | 5 ++++-
> include/acpi/acpi_bus.h | 1 +
> 3 files changed, 5 insertions(+), 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
> @@ -258,7 +258,10 @@ static int __init pnpacpi_add_device(str
> if (!pnpid)
> return 0;
> - if (is_exclusive_device(device) || !device->status.present)
> + if (acpi_bus_get_status(device))
> + return 0;
> + if (is_exclusive_device(device) || !acpi_device_is_present(device))
> return 0;
> dev = pnp_alloc_dev(&pnpacpi_protocol, num, pnpid);
> Index: linux-pm/drivers/acpi/internal.h
> --- linux-pm.orig/drivers/acpi/internal.h
> +++ linux-pm/drivers/acpi/internal.h
> @@ -97,7 +97,6 @@ void acpi_device_add_finalize(struct acp
> void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
> int acpi_bind_one(struct device *dev, struct acpi_device *adev);
> int acpi_unbind_one(struct device *dev);
> -bool acpi_device_is_present(struct acpi_device *adev);
> bool acpi_device_is_battery(struct acpi_device *adev);
> /* --------------------------------------------------------------------------
This hunk required a trivial context change in v3.14-rc7.
> Index: linux-pm/include/acpi/acpi_bus.h
> --- linux-pm.orig/include/acpi/acpi_bus.h
> +++ linux-pm/include/acpi/acpi_bus.h
> @@ -422,6 +422,7 @@ void acpi_bus_put_acpi_device(struct acp
> acpi_status acpi_bus_get_status_handle(acpi_handle handle,
> unsigned long long *sta);
> int acpi_bus_get_status(struct acpi_device *device);
> +bool acpi_device_is_present(struct acpi_device *adev);
> int acpi_bus_set_power(acpi_handle handle, int state);
> const char *acpi_power_state_string(int state);
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