Messages in this thread | | | Date | Tue, 17 Oct 2017 20:44:45 +0200 | From | Pali Rohár <> | Subject | Re: [PATCH v9 03/17] platform/x86: dell-wmi: clean up wmi descriptor check |
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On Tuesday 17 October 2017 13:21:47 Mario Limonciello wrote: > Some cases the wrong type was used for errors and checks can be > done more cleanly. > > Signed-off-by: Mario Limonciello <mario.limonciello@dell.com> > Reviewed-by: Edward O'Callaghan <quasisec@google.com> > Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> > --- > drivers/platform/x86/dell-wmi.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c > index 2cfaaa8faf0a..ece2fe341f01 100644 > --- a/drivers/platform/x86/dell-wmi.c > +++ b/drivers/platform/x86/dell-wmi.c > @@ -663,19 +663,19 @@ static int dell_wmi_check_descriptor_buffer(struct wmi_device *wdev) > > buffer = (u32 *)obj->buffer.pointer; > > - if (buffer[0] != 0x4C4C4544 && buffer[1] != 0x494D5720) { > - dev_err(&wdev->dev, "Dell descriptor buffer has invalid signature (%*ph)\n", > - 8, buffer); > + if (strncmp(obj->string.pointer, "DELL WMI", 8) != 0) { > + dev_err(&wdev->dev, "Dell descriptor buffer has invalid signature (%8ph)\n", > + buffer); > ret = -EINVAL; > goto out; > } > > if (buffer[2] != 0 && buffer[2] != 1) > - dev_warn(&wdev->dev, "Dell descriptor buffer has unknown version (%d)\n", > + dev_warn(&wdev->dev, "Dell descriptor buffer has unknown version (%u)\n", > buffer[2]);
To be correct, buffer[2] is of type "u32", not of type "unsigned". So this patch does not fix it properly.
> > if (buffer[3] != 4096) > - dev_warn(&wdev->dev, "Dell descriptor buffer has invalid buffer length (%d)\n", > + dev_warn(&wdev->dev, "Dell descriptor buffer has invalid buffer length (%u)\n", > buffer[3]); > > priv->interface_version = buffer[2];
-- Pali Rohár pali.rohar@gmail.com
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