irda: fix overly long udelay()
irda_get_mtt() returns a hardcoded '10000' in some cases,
and with gcc-7, we get a build error because this triggers a
compile-time check in udelay():
drivers/net/irda/w83977af_ir.o: In function `w83977af_hard_xmit':
w83977af_ir.c:(.text.w83977af_hard_xmit+0x14c): undefined reference to `__bad_udelay'
Older compilers did not run into this because they either did not
completely inline the irda_get_mtt() or did not consider the
10000 value a constant expression.
The code has been wrong since the start of git history.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/irda/w83977af_ir.c b/drivers/net/irda/w83977af_ir.c
index 4e3d2e7..e8c3a8c 100644
--- a/drivers/net/irda/w83977af_ir.c
+++ b/drivers/net/irda/w83977af_ir.c
@@ -518,7 +518,9 @@
mtt = irda_get_mtt(skb);
pr_debug("%s(%ld), mtt=%d\n", __func__ , jiffies, mtt);
- if (mtt)
+ if (mtt > 1000)
+ mdelay(mtt/1000);
+ else if (mtt)
udelay(mtt);
/* Enable DMA interrupt */