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authorMatt Carlson <mcarlson@broadcom.com>2009-08-28 14:01:15 +0000
committerDavid S. Miller <davem@davemloft.net>2009-08-29 15:42:54 -0700
commit07b0173cb5d6a9d77646cd855066ebe90b9203f2 (patch)
tree5a2490f1965e552688f4b3cec4453d0bba99a386
parent79ed5ac7ddd5f8d6463f5a17b3575772e9896481 (diff)
tg3: Cleanup interrupt setup / teardown
Later patches will be adding MSIX support, which will complicate interrupt initialization. This patch prepares for the integration by breaking out the interrupt setup and teardown code into separate functions and cleaning up the error return paths. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/tg3.c94
1 files changed, 46 insertions, 48 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 3725ac85708..37a462986db 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -7865,6 +7865,33 @@ static int tg3_request_firmware(struct tg3 *tp)
return 0;
}
+static void tg3_ints_init(struct tg3 *tp)
+{
+ if (tp->tg3_flags & TG3_FLAG_SUPPORT_MSI) {
+ /* All MSI supporting chips should support tagged
+ * status. Assert that this is the case.
+ */
+ if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)) {
+ printk(KERN_WARNING PFX "%s: MSI without TAGGED? "
+ "Not using MSI.\n", tp->dev->name);
+ } else if (pci_enable_msi(tp->pdev) == 0) {
+ u32 msi_mode;
+
+ msi_mode = tr32(MSGINT_MODE);
+ tw32(MSGINT_MODE, msi_mode | MSGINT_MODE_ENABLE);
+ tp->tg3_flags2 |= TG3_FLG2_USING_MSI;
+ }
+ }
+}
+
+static void tg3_ints_fini(struct tg3 *tp)
+{
+ if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
+ pci_disable_msi(tp->pdev);
+ tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
+ }
+}
+
static int tg3_open(struct net_device *dev)
{
struct tg3 *tp = netdev_priv(dev);
@@ -7906,33 +7933,14 @@ static int tg3_open(struct net_device *dev)
if (err)
return err;
- if (tp->tg3_flags & TG3_FLAG_SUPPORT_MSI) {
- /* All MSI supporting chips should support tagged
- * status. Assert that this is the case.
- */
- if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)) {
- printk(KERN_WARNING PFX "%s: MSI without TAGGED? "
- "Not using MSI.\n", tp->dev->name);
- } else if (pci_enable_msi(tp->pdev) == 0) {
- u32 msi_mode;
+ tg3_ints_init(tp);
- msi_mode = tr32(MSGINT_MODE);
- tw32(MSGINT_MODE, msi_mode | MSGINT_MODE_ENABLE);
- tp->tg3_flags2 |= TG3_FLG2_USING_MSI;
- }
- }
- err = tg3_request_irq(tp);
+ napi_enable(&tp->napi);
- if (err) {
- if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
- pci_disable_msi(tp->pdev);
- tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
- }
- tg3_free_consistent(tp);
- return err;
- }
+ err = tg3_request_irq(tp);
- napi_enable(&tp->napi);
+ if (err)
+ goto err_out1;
tg3_full_lock(tp, 0);
@@ -7960,36 +7968,19 @@ static int tg3_open(struct net_device *dev)
tg3_full_unlock(tp);
- if (err) {
- napi_disable(&tp->napi);
- free_irq(tp->pdev->irq, dev);
- if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
- pci_disable_msi(tp->pdev);
- tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
- }
- tg3_free_consistent(tp);
- return err;
- }
+ if (err)
+ goto err_out2;
if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
err = tg3_test_msi(tp);
if (err) {
tg3_full_lock(tp, 0);
-
- if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
- pci_disable_msi(tp->pdev);
- tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
- }
tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
tg3_free_rings(tp);
- tg3_free_consistent(tp);
-
tg3_full_unlock(tp);
- napi_disable(&tp->napi);
-
- return err;
+ goto err_out1;
}
if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
@@ -8015,6 +8006,15 @@ static int tg3_open(struct net_device *dev)
netif_start_queue(dev);
return 0;
+
+err_out2:
+ free_irq(tp->pdev->irq, dev);
+
+err_out1:
+ napi_disable(&tp->napi);
+ tg3_ints_fini(tp);
+ tg3_free_consistent(tp);
+ return err;
}
#if 0
@@ -8273,10 +8273,8 @@ static int tg3_close(struct net_device *dev)
tg3_full_unlock(tp);
free_irq(tp->pdev->irq, dev);
- if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
- pci_disable_msi(tp->pdev);
- tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
- }
+
+ tg3_ints_fini(tp);
memcpy(&tp->net_stats_prev, tg3_get_stats(tp->dev),
sizeof(tp->net_stats_prev));