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HID: i2c-hid: fix i2c_hid_dbg macro

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This avoids the problematic case:

if (condition)
	i2c_hid_dbg(ihid, "Blah blah %d\n", i);
else
	do_something_very_important();

Which looks correct, however with the previous macro definition,
this expands to the unexpected:

if (condition) {
	if (debug)	\
		dev_printk(KERN_DEBUG, &ihid->client->dev,
				"Blah blah %d\n", i);
	else
		do_something_very_important();
}

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2012-12-04 16:27:46 +01:00 committed by Jiri Kosina
parent ee8e880634
commit fa738644e5
1 changed files with 5 additions and 3 deletions
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8
drivers/hid/i2c-hid/i2c-hid.c
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@ -50,9 +50,11 @@ static bool debug;
module_param(debug, bool, 0444);
MODULE_PARM_DESC(debug, "print a lot of debug information");
#define i2c_hid_dbg(ihid, fmt, arg...) \
if (debug) \
dev_printk(KERN_DEBUG, &(ihid)->client->dev, fmt, ##arg)
#define i2c_hid_dbg(ihid, fmt, arg...) \
do { \
if (debug) \
dev_printk(KERN_DEBUG, &(ihid)->client->dev, fmt, ##arg); \
} while (0)
struct i2c_hid_desc {
__le16 wHIDDescLength;