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HID: explain the signed/unsigned handling in hid_add_field()

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Put a comment that clarifies the condition that handles both signed
and unsigned case for logical min/max in hid_add_field().

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Jiri Kosina
2012-05-14 15:02:56 +02:00
parent 0cd516c246
commit bb2e197695
1 changed files with 1 additions and 0 deletions
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drivers/hid/hid-core.c
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@@ -230,6 +230,7 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign
return -1;
}
/* Handle both signed and unsigned cases properly */
if ((parser->global.logical_minimum < 0 &&
parser->global.logical_maximum <
parser->global.logical_minimum) ||