[PATCH 05/14] HID: i2c-hid: fix i2c_hid_dbg macro
From: Benjamin Tissoires <hidden>
Date: 2012-12-04 15:35:26
Also in:
linux-i2c, lkml
Subsystem:
hid core layer, the rest · Maintainers:
Jiri Kosina, Benjamin Tissoires, Linus Torvalds
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 <redacted>
---
drivers/hid/i2c-hid/i2c-hid.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index 9ee6555..54950be 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c@@ -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;
--
1.8.0.1