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ACPI: utils: include UUID in _DSM evaluation warning

Message ID f80dfd57fdca87897f070a3ea4ee0a26b03e7831.camel@mniewoehner.de
State Accepted
Commit 06eb8dc097b3fcb2d02eb553b17af5fcc2952f96
Headers show
Series ACPI: utils: include UUID in _DSM evaluation warning | expand

Commit Message

Michael Niewöhner May 16, 2022, 5:25 p.m. UTC
The _DSM evaluation warning in its current form is not very helpful, as 
it lacks any specific information:
  ACPI: \: failed to evaluate _DSM (0x1001)

Thus, include the UUID of the missing _DSM:
  ACPI: \: failed to evaluate _DSM bf0212f2-... (0x1001)

Signed-off-by: Michael Niewöhner <linux@mniewoehner.de>
---
 drivers/acpi/utils.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

 }

Comments

Rafael J. Wysocki May 17, 2022, 6:28 p.m. UTC | #1
On Tue, May 17, 2022 at 8:26 PM Michael Niewöhner <linux@mniewoehner.de> wrote:
>
> On Tue, 2022-05-17 at 16:49 +0200, Rafael J. Wysocki wrote:
> > On Mon, May 16, 2022 at 7:25 PM Michael Niewöhner <linux@mniewoehner.de>
> > wrote:
> > >
> > > The _DSM evaluation warning in its current form is not very helpful, as
> > > it lacks any specific information:
> > >   ACPI: \: failed to evaluate _DSM (0x1001)
> > >
> > > Thus, include the UUID of the missing _DSM:
> > >   ACPI: \: failed to evaluate _DSM bf0212f2-... (0x1001)
> > >
> > > Signed-off-by: Michael Niewöhner <linux@mniewoehner.de>
> > > ---
> > >  drivers/acpi/utils.c | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
> > > index d5cedffeeff9..7da993f5b6c3 100644
> > > --- a/drivers/acpi/utils.c
> > > +++ b/drivers/acpi/utils.c
> > > @@ -681,7 +681,8 @@ acpi_evaluate_dsm(acpi_handle handle, const guid_t
> > > *guid,
> > > u64 rev, u64 func,
> > >
> > >         if (ret != AE_NOT_FOUND)
> > >                 acpi_handle_warn(handle,
> > > -                               "failed to evaluate _DSM (0x%x)\n", ret);
> > > +                               "failed to evaluate _DSM %pUb (0x%x)\n",
> > > +                               ret, guid);
> >
> > Shouldn't this be "guid, ret" ?
>
> Ouch, yes ofc.
>
> > Also, don't you want to print the
> > value of the GUID rather than the address of its location?
>
> Not sure what you mean tbh. Documentation/core-api/printk-formats.rst states
> %pUb being the right format. lib/test_printf.c implements it that way, too.

I missed that, sorry.
Rafael J. Wysocki May 19, 2022, 6:09 p.m. UTC | #2
On Tue, May 17, 2022 at 8:40 PM Michael Niewöhner <linux@mniewoehner.de> wrote:
>
> The _DSM evaluation warning in its current form is not very helpful, as
> it lacks any specific information:
>   ACPI: \: failed to evaluate _DSM (0x1001)
>
> Thus, include the UUID of the missing _DSM:
>   ACPI: \: failed to evaluate _DSM bf0212f2-... (0x1001)
>
> Signed-off-by: Michael Niewöhner <linux@mniewoehner.de>
> ---
> Changes in v2:
>  - fix arguments order
>  - fix indentation
>  - drop line break
>
>  drivers/acpi/utils.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
> index d5cedffeeff9..3a9773a09e19 100644
> --- a/drivers/acpi/utils.c
> +++ b/drivers/acpi/utils.c
> @@ -681,7 +681,7 @@ acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 func,
>
>         if (ret != AE_NOT_FOUND)
>                 acpi_handle_warn(handle,
> -                               "failed to evaluate _DSM (0x%x)\n", ret);
> +                                "failed to evaluate _DSM %pUb (0x%x)\n", guid, ret);
>
>         return NULL;
>  }
> --

Applied as 5.19 material, thanks!
diff mbox series

Patch

diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index d5cedffeeff9..7da993f5b6c3 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -681,7 +681,8 @@  acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
u64 rev, u64 func,
 
        if (ret != AE_NOT_FOUND)
                acpi_handle_warn(handle,
-                               "failed to evaluate _DSM (0x%x)\n", ret);
+                               "failed to evaluate _DSM %pUb (0x%x)\n",
+                               ret, guid);
 
        return NULL;