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platform/x86: hp-wmi: Fix ACPI errors caused by passing 0 as input size
commit f3e4f3fc8e
upstream.
The AML code implementing the WMI methods creates a variable length
field to hold the input data we pass like this:
CreateDWordField (Arg1, 0x0C, DSZI)
Local5 = DSZI /* \HWMC.DSZI */
CreateField (Arg1, 0x80, (Local5 * 0x08), DAIN)
If we pass 0 as bios_args.datasize argument then (Local5 * 0x08)
is 0 which results in these errors:
[ 71.973305] ACPI BIOS Error (bug): Attempt to CreateField of length zero (20190816/dsopcode-133)
[ 71.973332] ACPI Error: Aborting method \HWMC due to previous error (AE_AML_OPERAND_VALUE) (20190816/psparse-529)
[ 71.973413] ACPI Error: Aborting method \_SB.WMID.WMAA due to previous error (AE_AML_OPERAND_VALUE) (20190816/psparse-529)
And in our HPWMI_WIRELESS2_QUERY calls always failing. for read commands
like HPWMI_WIRELESS2_QUERY the DSZI value is not used / checked, except for
read commands where extra input is needed to specify exactly what to read.
So for HPWMI_WIRELESS2_QUERY we can safely pass the size of the expected
output as insize to hp_wmi_perform_query(), as we are already doing for all
other HPWMI_READ commands we send. Doing so fixes these errors.
Cc: stable@vger.kernel.org
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=197007
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=201981
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1520703
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
591547ec35
commit
6d44085569
1 changed files with 2 additions and 2 deletions
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@ -393,7 +393,7 @@ static int hp_wmi_rfkill2_refresh(void)
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int err, i;
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err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
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0, sizeof(state));
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sizeof(state), sizeof(state));
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if (err)
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return err;
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@ -790,7 +790,7 @@ static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
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int err, i;
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err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
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0, sizeof(state));
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sizeof(state), sizeof(state));
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if (err)
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return err < 0 ? err : -EINVAL;
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