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platform/x86: hp-wmi: Do not shadow error values

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All the helper functions (i.e. hp_wmi_dock_state, hp_wmi_tablet_state,
...) using hp_wmi_perform_query to perform an HP WMI query shadow the
returned value in case of error.

We return -EINVAL only when the HP WMI query returns a positive value
(the specific error code) to not mix this up with the actual value
returned by the helper function.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
This commit is contained in:
Carlo Caione 2017-04-19 22:36:39 +02:00 committed by Darren Hart (VMware)
parent d1c7073bce
commit d313876925
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/platform/x86/hp-wmi.c
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@ -248,7 +248,7 @@ static int hp_wmi_display_state(void)
int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return state;
}
@ -258,7 +258,7 @@ static int hp_wmi_hddtemp_state(void)
int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return state;
}
@ -268,7 +268,7 @@ static int hp_wmi_als_state(void)
int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return state;
}
@ -279,7 +279,7 @@ static int hp_wmi_dock_state(void)
sizeof(state), sizeof(state));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return state & 0x1;
}
@ -290,7 +290,7 @@ static int hp_wmi_tablet_state(void)
int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return (state & 0x4) ? 1 : 0;
}
@ -323,7 +323,7 @@ static int __init hp_wmi_enable_hotkeys(void)
int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &value,
sizeof(value), 0);
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return 0;
}
@ -336,7 +336,7 @@ static int hp_wmi_set_block(void *data, bool blocked)
ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
&query, sizeof(query), 0);
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return 0;
}
@ -428,7 +428,7 @@ static int hp_wmi_post_code_state(void)
int ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return state;
}
@ -494,7 +494,7 @@ static ssize_t set_als(struct device *dev, struct device_attribute *attr,
int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
sizeof(tmp), sizeof(tmp));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return count;
}
@ -515,7 +515,7 @@ static ssize_t set_postcode(struct device *dev, struct device_attribute *attr,
ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 1, &tmp,
sizeof(tmp), sizeof(tmp));
if (ret)
return -EINVAL;
return ret < 0 ? ret : -EINVAL;
return count;
}