[PATCH 05/14] isdn: isdnloop: suppress a gcc-7 warning

[Arnd Bergmann]

We test whether a bit is set in a mask here, which is correct
but gcc warns about it as it thinks it might be confusing:

drivers/isdn/isdnloop/isdnloop.c:412:37: error: ?: using integer constants in boolean context, the expression will always evaluate to 'true' [-Werror=int-in-bool-context]

This replaces the negation of an integer with an equivalent
comparison to zero, which gets rid of the warning.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/isdn/isdnloop/isdnloop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c
index 6ffd13466b8c..5792928b944d 100644
--- a/drivers/isdn/isdnloop/isdnloop.c
+++ b/drivers/isdn/isdnloop/isdnloop.c
@@ -409,7 +409,7 @@ isdnloop_sendbuf(int channel, struct sk_buff *skb, isdnloop_card *card)
 		return -EINVAL;
 	}
 	if (len) {
-		if (!(card->flags & (channel) ? ISDNLOOP_FLAGS_B2ACTIVE : ISDNLOOP_FLAGS_B1ACTIVE))
+		if ((card->flags & (channel) ? ISDNLOOP_FLAGS_B2ACTIVE : ISDNLOOP_FLAGS_B1ACTIVE) == 0)
 			return 0;
 		if (card->sndcount[channel] > ISDNLOOP_MAX_SQUEUE)
 			return 0;
-- 
2.9.0