From 068e8a30320e33b1f8d15df9eaef84f04258f96d Mon Sep 17 00:00:00 2001
From: Jean Delvare <jdelvare@suse.de>
Date: Sun, 12 Sep 2010 22:45:39 +0000
Subject: [PATCH] e1000e: Simplify MSI interrupt testing
The code is quite convoluted, simplify it. This also avoids calling
e1000_request_irq() without testing the value it returned, which was
bad.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Bruce Allan <bruce.w.allan@intel.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/e1000e/netdev.c | 29 ++++-------------------------
1 file changed, 4 insertions(+), 25 deletions(-)
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index c9b66f4727e4..e2c7e0d767b1 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -3412,22 +3412,16 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
if (adapter->flags & FLAG_MSI_TEST_FAILED) {
adapter->int_mode = E1000E_INT_MODE_LEGACY;
- err = -EIO;
- e_info("MSI interrupt test failed!\n");
- }
+ e_info("MSI interrupt test failed, using legacy interrupt.\n");
+ } else
+ e_dbg("MSI interrupt test succeeded!\n");
free_irq(adapter->pdev->irq, netdev);
pci_disable_msi(adapter->pdev);
- if (err == -EIO)
- goto msi_test_failed;
-
- /* okay so the test worked, restore settings */
- e_dbg("MSI interrupt test succeeded!\n");
msi_test_failed:
e1000e_set_interrupt_capability(adapter);
- e1000_request_irq(adapter);
- return err;
+ return e1000_request_irq(adapter);
}
/**
@@ -3459,21 +3453,6 @@ static int e1000_test_msi(struct e1000_adapter *adapter)
pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
}
- /* success ! */
- if (!err)
- return 0;
-
- /* EIO means MSI test failed */
- if (err != -EIO)
- return err;
-
- /* back to INTx mode */
- e_warn("MSI interrupt test failed, using legacy interrupt.\n");
-
- e1000_free_irq(adapter);
-
- err = e1000_request_irq(adapter);
-
return err;
}
--
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