m32r: Fix ei_tx_timeout() in drivers/net/lib8390.c

Change INT0 trigger mode from edge-sense mode to level-sense mode,
in order to fix the following timeout error:
  'NETDEV WATCHDOG: eth0: transmit timed out'.

This patch is required only for the Mappi platform.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Cc: Hitoshi Yamamoto <hitoshiy@linux-m32r.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 3 insertions, 11 deletions

diff --git a/arch/m32r/kernel/setup_mappi.c b/arch/m32r/kernel/setup_mappi.c
index 6b2d77da0683..fe73c9ec611f 100644
--- a/arch/m32r/kernel/setup_mappi.c
+++ b/arch/m32r/kernel/setup_mappi.c
@@ -45,7 +45,8 @@ static void mask_and_ack_mappi(unsigned int irq)
 
 static void end_mappi_irq(unsigned int irq)
 {
-        enable_mappi_irq(irq);
+        if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+                enable_mappi_irq(irq);
 }
 
 static unsigned int startup_mappi_irq(unsigned int irq)
@@ -88,7 +89,7 @@ void __init init_IRQ(void)
         irq_desc[M32R_IRQ_INT0].chip = &mappi_irq_type;
         irq_desc[M32R_IRQ_INT0].action = NULL;
         irq_desc[M32R_IRQ_INT0].depth = 1;
-        icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD10;
+        icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN|M32R_ICUCR_ISMOD11;
         disable_mappi_irq(M32R_IRQ_INT0);
 #endif /* CONFIG_M32R_NE2000 */
 
diff --git a/drivers/net/lib8390.c b/drivers/net/lib8390.c
index 5c86e737f954..721ee38d2241 100644
--- a/drivers/net/lib8390.c
+++ b/drivers/net/lib8390.c
@@ -219,15 +219,6 @@ static void ei_tx_timeout(struct net_device *dev)
         int txsr, isr, tickssofar = jiffies - dev->trans_start;
         unsigned long flags;
 
-#if defined(CONFIG_M32R) && defined(CONFIG_SMP)
-        unsigned long icucr;
-
-        local_irq_save(flags);
-        icucr = inl(M32R_ICU_CR1_PORTL);
-        icucr |= M32R_ICUCR_ISMOD11;
-        outl(icucr, M32R_ICU_CR1_PORTL);
-        local_irq_restore(flags);
-#endif
         ei_local->stat.tx_errors++;
 
         spin_lock_irqsave(&ei_local->page_lock, flags);