From: Satyam Sharma Date: Fri, 10 Aug 2007 22:30:31 +0000 (-0700) Subject: [NET] netconsole: Use netif_running() in write_msg() X-Git-Tag: v2.6.24-rc1~1454^2~809 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=0cc120bea1d4ba3893a26c70d271e89f928b8a97;p=linux-2.6-omap-h63xx.git [NET] netconsole: Use netif_running() in write_msg() Based upon initial work by Keiichi Kii . Avoid unnecessarily disabling interrupts and calling netpoll_send_udp() if the corresponding local interface is not up. Signed-off-by: Satyam Sharma Acked-by: Keiichi Kii Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index e56aa6c9743..75cb76139dd 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -75,16 +75,16 @@ static void write_msg(struct console *con, const char *msg, unsigned int len) int frag, left; unsigned long flags; - local_irq_save(flags); - - for (left = len; left;) { - frag = min(left, MAX_PRINT_CHUNK); - netpoll_send_udp(&np, msg, frag); - msg += frag; - left -= frag; + if (netif_running(np.dev)) { + local_irq_save(flags); + for (left = len; left;) { + frag = min(left, MAX_PRINT_CHUNK); + netpoll_send_udp(&np, msg, frag); + msg += frag; + left -= frag; + } + local_irq_restore(flags); } - - local_irq_restore(flags); } static struct console netconsole = {