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rtl8139: add format attribute to DPRINTF 

gcc can check the format string for correctness even when debugging output is
not enabled.
Have to make sure arguments are always available. They are optimized out if
unneeded.

Signed-off-by: Benjamin Poirier <benjamin.poirier@gmail.com>
Cc: Igor V. Kovalenko <igor.v.kovalenko@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Benjamin Poirier 2011-04-20 19:39:02 -04:00 committed by Aurelien Jarno
parent 7cdeb319e4
commit ec48c7747a
1 changed files with 6 additions and 3 deletions
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9
hw/rtl8139.c
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@ -88,7 +88,11 @@
# define DPRINTF(fmt, ...) \
do { fprintf(stderr, "RTL8139: " fmt, ## __VA_ARGS__); } while (0)
#else
# define DPRINTF(fmt, ...) do { } while (0)
static inline __attribute__ ((format (printf, 1, 2)))
int DPRINTF(const char *fmt, ...)
{
return 0;
}
#endif
/* Symbolic offsets to registers. */
@ -2201,9 +2205,8 @@ static int rtl8139_cplus_transmit_one(RTL8139State *s)
if ((txdw0 & CP_TX_LGSEN) && ip_protocol == IP_PROTO_TCP)
{
#if defined (DEBUG_RTL8139)
int large_send_mss = (txdw0 >> 16) & CP_TC_LGSEN_MSS_MASK;
#endif
DPRINTF("+++ C+ mode offloaded task TSO MTU=%d IP data %d "
"frame data %d specified MSS=%d\n", ETH_MTU,
ip_data_len, saved_size - ETH_HLEN, large_send_mss);