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authorSatyam Sharma <satyam@infradead.org>2007-08-10 15:30:31 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:48:03 -0700
commit0cc120bea1d4ba3893a26c70d271e89f928b8a97 (patch)
tree5ff99a2211acc2886889b994d1dd3b9e7b1ce892 /drivers/net/netconsole.c
parentd2b60881e28072109601c373abd1085499ccfef0 (diff)
downloadop-kernel-dev-0cc120bea1d4ba3893a26c70d271e89f928b8a97.zip
op-kernel-dev-0cc120bea1d4ba3893a26c70d271e89f928b8a97.tar.gz
[NET] netconsole: Use netif_running() in write_msg()
Based upon initial work by Keiichi Kii <k-keiichi@bx.jp.nec.com>. Avoid unnecessarily disabling interrupts and calling netpoll_send_udp() if the corresponding local interface is not up. Signed-off-by: Satyam Sharma <satyam@infradead.org> Acked-by: Keiichi Kii <k-keiichi@bx.jp.nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netconsole.c')
-rw-r--r--drivers/net/netconsole.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index e56aa6c..75cb761 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 = {
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