diff options
| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2019-08-12 13:08:54 -0700 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2019-09-17 08:59:05 +0200 |
| commit | 10f98fef7ba65fcb74129296631adc99750f1a96 (patch) | |
| tree | 16d694a5fccdaeb9630374e050cbcf9d60c55445 /drivers/watchdog/ziirave_wdt.c | |
| parent | e6bd448653d61d17ddf9a663ca84d1f422846907 (diff) | |
watchdog: ziirave_wdt: Zero out only what's necessary
Instead of zeroing out all of the packet and then overwriting a
significant portion of those zeros via memcpy(), zero out only a
portion of the packet that is known to not contain any data.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Rick Ramstetter <rick@anteaterllc.com>
Cc: linux-watchdog@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20190812200906.31344-11-andrew.smirnov@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog/ziirave_wdt.c')
| -rw-r--r-- | drivers/watchdog/ziirave_wdt.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/watchdog/ziirave_wdt.c b/drivers/watchdog/ziirave_wdt.c index e0f55cbdc603..69694f2836d7 100644 --- a/drivers/watchdog/ziirave_wdt.c +++ b/drivers/watchdog/ziirave_wdt.c @@ -260,8 +260,6 @@ static int __ziirave_firm_write_pkt(struct watchdog_device *wdd, return -EMSGSIZE; } - memset(packet, 0, sizeof(packet)); - /* Packet length */ packet[0] = len; /* Packet address */ @@ -269,6 +267,7 @@ static int __ziirave_firm_write_pkt(struct watchdog_device *wdd, packet[2] = (addr16 & 0xff00) >> 8; memcpy(packet + 3, data, len); + memset(packet + 3 + len, 0, ZIIRAVE_FIRM_PKT_DATA_SIZE - len); /* Packet checksum */ for (i = 0; i < len + 3; i++) |