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authorJesse Brandeburg <jesse.brandeburg@intel.com>2008-03-21 11:07:03 -0700
committerJeff Garzik <jeff@garzik.org>2008-03-26 00:17:53 -0400
commit9c61a9dcb26dc1db9912c11568b98f89b635adfd (patch)
treecd1abb754a5befd9112a2baf0108c7fcb1982398 /drivers/net/ixgb
parent9150b76a6439b60e678ccb6376ee3686a2f76767 (diff)
downloadop-kernel-dev-9c61a9dcb26dc1db9912c11568b98f89b635adfd.zip
op-kernel-dev-9c61a9dcb26dc1db9912c11568b98f89b635adfd.tar.gz
ixgb: remove irq_sem
ixgb can remove irq_sem by auditing all the call sites to make sure that each of them makes sure the adapter is in the correct state before re-enabling interrupts. after doing this to all of our other drivers it is becoming easier. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/ixgb')
-rw-r--r--drivers/net/ixgb/ixgb.h1
-rw-r--r--drivers/net/ixgb/ixgb_main.c18
2 files changed, 6 insertions, 13 deletions
diff --git a/drivers/net/ixgb/ixgb.h b/drivers/net/ixgb/ixgb.h
index a95ab55..f2fff90 100644
--- a/drivers/net/ixgb/ixgb.h
+++ b/drivers/net/ixgb/ixgb.h
@@ -158,7 +158,6 @@ struct ixgb_adapter {
uint16_t link_speed;
uint16_t link_duplex;
spinlock_t tx_lock;
- atomic_t irq_sem;
struct work_struct tx_timeout_task;
struct timer_list blink_timer;
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index d9688bb..9c9bf31 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -197,7 +197,6 @@ module_exit(ixgb_exit_module);
static void
ixgb_irq_disable(struct ixgb_adapter *adapter)
{
- atomic_inc(&adapter->irq_sem);
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
IXGB_WRITE_FLUSH(&adapter->hw);
synchronize_irq(adapter->pdev->irq);
@@ -211,14 +210,12 @@ ixgb_irq_disable(struct ixgb_adapter *adapter)
static void
ixgb_irq_enable(struct ixgb_adapter *adapter)
{
- if(atomic_dec_and_test(&adapter->irq_sem)) {
- u32 val = IXGB_INT_RXT0 | IXGB_INT_RXDMT0 |
- IXGB_INT_TXDW | IXGB_INT_LSC;
- if (adapter->hw.subsystem_vendor_id == SUN_SUBVENDOR_ID)
- val |= IXGB_INT_GPI0;
- IXGB_WRITE_REG(&adapter->hw, IMS, val);
- IXGB_WRITE_FLUSH(&adapter->hw);
- }
+ u32 val = IXGB_INT_RXT0 | IXGB_INT_RXDMT0 |
+ IXGB_INT_TXDW | IXGB_INT_LSC;
+ if (adapter->hw.subsystem_vendor_id == SUN_SUBVENDOR_ID)
+ val |= IXGB_INT_GPI0;
+ IXGB_WRITE_REG(&adapter->hw, IMS, val);
+ IXGB_WRITE_FLUSH(&adapter->hw);
}
int
@@ -305,7 +302,6 @@ ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog)
#ifdef CONFIG_IXGB_NAPI
napi_disable(&adapter->napi);
- atomic_set(&adapter->irq_sem, 0);
#endif
/* waiting for NAPI to complete can re-enable interrupts */
ixgb_irq_disable(adapter);
@@ -594,7 +590,6 @@ ixgb_sw_init(struct ixgb_adapter *adapter)
/* enable flow control to be programmed */
hw->fc.send_xon = 1;
- atomic_set(&adapter->irq_sem, 1);
spin_lock_init(&adapter->tx_lock);
set_bit(__IXGB_DOWN, &adapter->flags);
@@ -1774,7 +1769,6 @@ ixgb_intr(int irq, void *data)
of the posted write is intentionally left out.
*/
- atomic_inc(&adapter->irq_sem);
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
__netif_rx_schedule(netdev, &adapter->napi);
}
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