linux-kernel - [PATCH 2.6.24-rt1] SMC91x: Use special_lock when CONFIG_PREEMPT

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Message-Id: <1202952946-10511-1-git-send-email-khilman@mvista.com>
Date:	Wed, 13 Feb 2008 17:35:46 -0800
From:	Kevin Hilman <khilman@...sta.com>
To:	linux-rt-users@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Kevin Hilman <khilman@...sta.com>
Subject: [PATCH 2.6.24-rt1] SMC91x: Use special_lock when CONFIG_PREEMPT_[HARD|SOFT]IRQS

The smc_special_locks should also be used when either softIRQs or hard
IRQs are preempted which may lead to the same problems as under SMP.

Signed-off-by: Kevin Hilman <khilman@...sta.com>

---
 drivers/net/smc91x.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c
index f198c49..be62616 100644
--- a/drivers/net/smc91x.c
+++ b/drivers/net/smc91x.c
@@ -530,7 +530,8 @@ static inline void  smc_rcv(struct net_device *dev)
 	}
 }
 
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) ||						\
+    defined(CONFIG_PREEMPT_SOFTIRQS) || defined(CONFIG_PREEMPT_HARDIRQS)
 /*
  * On SMP we have the following problem:
  *
-- 
1.5.4

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