From: Jiri Kosina Date: Fri, 30 Nov 2007 10:12:58 +0000 (+0100) Subject: HID: remove redundant WARN_ON()s in order not to scare users X-Git-Tag: v2.6.25-rc1~1170^2~8 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=c4124c9b68bf8ecf1e8afedad3a22e18666cb6f3;p=linux-2.6-omap-h63xx.git HID: remove redundant WARN_ON()s in order not to scare users The WARN_ON() in implement() and extract() spit out stacktraces and a lot of other information that might make users think that there is something seriously wrong with the system. WARN_ON() should not be deliberately triggerable by userspace application, which these can be. Usually this WARN_ON() triggers when hid2hci utility is sending the data that don't correspond to the device's report descriptor. Convert these messages to more friendly printk(). Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 2884b036495..d73a768e176 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include @@ -758,7 +759,9 @@ static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n) { u64 x; - WARN_ON(n > 32); + if (n > 32) + printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n", + n, current->comm); report += offset >> 3; /* adjust byte index */ offset &= 7; /* now only need bit offset into one byte */ @@ -780,8 +783,13 @@ static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u3 __le64 x; u64 m = (1ULL << n) - 1; - WARN_ON(n > 32); + if (n > 32) + printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n", + n, current->comm); + if (value > m) + printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n", + value, current->comm); WARN_ON(value > m); value &= m;