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x86, wmi fix modalias_show return values

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I just fixed this same bug in arch/powerpc/kernel/vio.c and took a quick
look for other similar errors in the kernel.

modalias_show() should return an empty string on error, not errno.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
This commit is contained in:
Prarit Bhargava
2013-10-03 19:23:36 -04:00
committed by Matthew Garrett
parent ed12f295bf
commit a80e1053aa
1 changed files with 4 additions and 2 deletions
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drivers/platform/x86/wmi.c
+4 -2
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@@ -672,8 +672,10 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
struct wmi_block *wblock; struct wmi_block *wblock;
wblock = dev_get_drvdata(dev); wblock = dev_get_drvdata(dev);
if (!wblock) if (!wblock) {
return -ENOMEM; strcat(buf, "\n");
return strlen(buf);
}
wmi_gtoa(wblock->gblock.guid, guid_string); wmi_gtoa(wblock->gblock.guid, guid_string);