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Message-ID: <20071018010722.GA3483@havoc.gtf.org>
Date: Wed, 17 Oct 2007 21:07:22 -0400
From: Jeff Garzik <jeff@...zik.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: [git patches] net driver fixes
Please pull from 'upstream-linus' branch of
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6.git upstream-linus
to receive the following updates:
drivers/net/3c59x.c | 2 +-
drivers/net/forcedeth.c | 27 ++++++++++-------
drivers/net/fs_enet/fs_enet-main.c | 28 ++++++++++-------
drivers/net/fs_enet/fs_enet.h | 1 +
drivers/net/gianfar.c | 4 ++-
drivers/net/gianfar.h | 1 -
drivers/net/ibm_newemac/mal.c | 2 +-
drivers/net/pcnet32.c | 58 ++++++++++++++++++++----------------
drivers/net/sky2.c | 46 ++++++++++++----------------
include/linux/netdevice.h | 18 +++++++++++
10 files changed, 108 insertions(+), 79 deletions(-)
Anton Vorontsov (1):
gianfar: fix obviously wrong #ifdef CONFIG_GFAR_NAPI placement
Badari Pulavarty (1):
vortex_up should initialize "err"
Benjamin Herrenschmidt (1):
fix EMAC driver for proper napi_synchronize API
Don Fry (3):
pcnet32: fix non-napi packet reception
pcnet32: remove compile warnings in non-napi mode
pcnet32: remove private net_device_stats structure
Ingo Molnar (1):
forcedeth: fix rx-work condition in nv_rx_process_optimized() too
Manfred Spraul (1):
forcedeth msi bugfix
Scott Wood (1):
fs_enet: Update for API changes
Sebastian Siewior (1):
gianfar: remove orphan struct.
Stephen Hemminger (2):
napi_synchronize: waiting for NAPI
sky2: shutdown cleanup
diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c
index 862f472..6f8e7d4 100644
--- a/drivers/net/3c59x.c
+++ b/drivers/net/3c59x.c
@@ -1491,7 +1491,7 @@ vortex_up(struct net_device *dev)
struct vortex_private *vp = netdev_priv(dev);
void __iomem *ioaddr = vp->ioaddr;
unsigned int config;
- int i, mii_reg1, mii_reg5, err;
+ int i, mii_reg1, mii_reg5, err = 0;
if (VORTEX_PCI(vp)) {
pci_set_power_state(VORTEX_PCI(vp), PCI_D0); /* Go active */
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index cfbb7aa..70ddf1a 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -992,7 +992,7 @@ static void nv_enable_irq(struct net_device *dev)
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
- enable_irq(dev->irq);
+ enable_irq(np->pci_dev->irq);
} else {
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
@@ -1008,7 +1008,7 @@ static void nv_disable_irq(struct net_device *dev)
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
- disable_irq(dev->irq);
+ disable_irq(np->pci_dev->irq);
} else {
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
@@ -1607,7 +1607,7 @@ static void nv_do_rx_refill(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
- disable_irq(dev->irq);
+ disable_irq(np->pci_dev->irq);
} else {
disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
}
@@ -1625,7 +1625,7 @@ static void nv_do_rx_refill(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
- enable_irq(dev->irq);
+ enable_irq(np->pci_dev->irq);
} else {
enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
}
@@ -2408,13 +2408,13 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
struct fe_priv *np = netdev_priv(dev);
u32 flags;
u32 vlanflags = 0;
- u32 rx_processed_cnt = 0;
+ int rx_work = 0;
struct sk_buff *skb;
int len;
while((np->get_rx.ex != np->put_rx.ex) &&
!((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
- (rx_processed_cnt++ < limit)) {
+ (rx_work < limit)) {
dprintk(KERN_DEBUG "%s: nv_rx_process_optimized: flags 0x%x.\n",
dev->name, flags);
@@ -2517,9 +2517,11 @@ next_pkt:
np->get_rx.ex = np->first_rx.ex;
if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
np->get_rx_ctx = np->first_rx_ctx;
+
+ rx_work++;
}
- return rx_processed_cnt;
+ return rx_work;
}
static void set_bufsize(struct net_device *dev)
@@ -3558,10 +3560,12 @@ static int nv_request_irq(struct net_device *dev, int intr_test)
if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
if ((ret = pci_enable_msi(np->pci_dev)) == 0) {
np->msi_flags |= NV_MSI_ENABLED;
+ dev->irq = np->pci_dev->irq;
if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
printk(KERN_INFO "forcedeth: request_irq failed %d\n", ret);
pci_disable_msi(np->pci_dev);
np->msi_flags &= ~NV_MSI_ENABLED;
+ dev->irq = np->pci_dev->irq;
goto out_err;
}
@@ -3624,7 +3628,7 @@ static void nv_do_nic_poll(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
- disable_irq_lockdep(dev->irq);
+ disable_irq_lockdep(np->pci_dev->irq);
mask = np->irqmask;
} else {
if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
@@ -3642,6 +3646,8 @@ static void nv_do_nic_poll(unsigned long data)
}
np->nic_poll_irq = 0;
+ /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
+
if (np->recover_error) {
np->recover_error = 0;
printk(KERN_INFO "forcedeth: MAC in recoverable error state\n");
@@ -3678,7 +3684,6 @@ static void nv_do_nic_poll(unsigned long data)
}
}
- /* FIXME: Do we need synchronize_irq(dev->irq) here? */
writel(mask, base + NvRegIrqMask);
pci_push(base);
@@ -3691,7 +3696,7 @@ static void nv_do_nic_poll(unsigned long data)
if (np->msi_flags & NV_MSI_X_ENABLED)
enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
else
- enable_irq_lockdep(dev->irq);
+ enable_irq_lockdep(np->pci_dev->irq);
} else {
if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
nv_nic_irq_rx(0, dev);
@@ -4948,7 +4953,7 @@ static int nv_close(struct net_device *dev)
#ifdef CONFIG_FORCEDETH_NAPI
napi_disable(&np->napi);
#endif
- synchronize_irq(dev->irq);
+ synchronize_irq(np->pci_dev->irq);
del_timer_sync(&np->oom_kick);
del_timer_sync(&np->nic_poll);
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index 04c6fae..f2a4d39 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -88,7 +88,7 @@ static void skb_align(struct sk_buff *skb, int align)
static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
{
struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi);
- struct net_device *dev = to_net_dev(fep->dev);
+ struct net_device *dev = fep->ndev;
const struct fs_platform_info *fpi = fep->fpi;
cbd_t __iomem *bdp;
struct sk_buff *skb, *skbn, *skbt;
@@ -217,7 +217,7 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
fep->cur_rx = bdp;
- if (received >= budget) {
+ if (received < budget) {
/* done */
netif_rx_complete(dev, napi);
(*fep->ops->napi_enable_rx)(dev);
@@ -807,20 +807,23 @@ static int fs_enet_open(struct net_device *dev)
int r;
int err;
- napi_enable(&fep->napi);
+ if (fep->fpi->use_napi)
+ napi_enable(&fep->napi);
/* Install our interrupt handler. */
r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
if (r != 0) {
printk(KERN_ERR DRV_MODULE_NAME
": %s Could not allocate FS_ENET IRQ!", dev->name);
- napi_disable(&fep->napi);
+ if (fep->fpi->use_napi)
+ napi_disable(&fep->napi);
return -EINVAL;
}
err = fs_init_phy(dev);
- if(err) {
- napi_disable(&fep->napi);
+ if (err) {
+ if (fep->fpi->use_napi)
+ napi_disable(&fep->napi);
return err;
}
phy_start(fep->phydev);
@@ -1232,7 +1235,7 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
fpi->rx_ring = 32;
fpi->tx_ring = 32;
fpi->rx_copybreak = 240;
- fpi->use_napi = 0;
+ fpi->use_napi = 1;
fpi->napi_weight = 17;
ret = find_phy(ofdev->node, fpi);
@@ -1249,11 +1252,11 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
goto out_free_fpi;
}
- SET_MODULE_OWNER(ndev);
dev_set_drvdata(&ofdev->dev, ndev);
fep = netdev_priv(ndev);
fep->dev = &ofdev->dev;
+ fep->ndev = ndev;
fep->fpi = fpi;
fep->ops = match->data;
@@ -1288,10 +1291,11 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
ndev->stop = fs_enet_close;
ndev->get_stats = fs_enet_get_stats;
ndev->set_multicast_list = fs_set_multicast_list;
- if (fpi->use_napi) {
- ndev->poll = fs_enet_rx_napi;
- ndev->weight = fpi->napi_weight;
- }
+
+ if (fpi->use_napi)
+ netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
+ fpi->napi_weight);
+
ndev->ethtool_ops = &fs_ethtool_ops;
ndev->do_ioctl = fs_ioctl;
diff --git a/drivers/net/fs_enet/fs_enet.h b/drivers/net/fs_enet/fs_enet.h
index baf6477..c675e29 100644
--- a/drivers/net/fs_enet/fs_enet.h
+++ b/drivers/net/fs_enet/fs_enet.h
@@ -75,6 +75,7 @@ struct phy_info {
struct fs_enet_private {
struct napi_struct napi;
struct device *dev; /* pointer back to the device (must be initialized first) */
+ struct net_device *ndev;
spinlock_t lock; /* during all ops except TX pckt processing */
spinlock_t tx_lock; /* during fs_start_xmit and fs_tx */
struct fs_platform_info *fpi;
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index cc288d8..38268d7 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -956,10 +956,12 @@ static int gfar_enet_open(struct net_device *dev)
}
err = startup_gfar(dev);
- if (err)
+ if (err) {
#ifdef CONFIG_GFAR_NAPI
napi_disable(&priv->napi);
#endif
+ return err;
+ }
netif_start_queue(dev);
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index c16cc8b..46cd773 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -749,7 +749,6 @@ struct gfar_private {
uint32_t msg_enable;
/* Network Statistics */
- struct net_device_stats stats;
struct gfar_extra_stats extra_stats;
};
diff --git a/drivers/net/ibm_newemac/mal.c b/drivers/net/ibm_newemac/mal.c
index a680eb0..9a88f71 100644
--- a/drivers/net/ibm_newemac/mal.c
+++ b/drivers/net/ibm_newemac/mal.c
@@ -322,7 +322,7 @@ void mal_poll_disable(struct mal_instance *mal, struct mal_commac *commac)
msleep(1);
/* Synchronize with the MAL NAPI poller */
- __napi_synchronize(&mal->napi);
+ napi_synchronize(&mal->napi);
}
void mal_poll_enable(struct mal_instance *mal, struct mal_commac *commac)
diff --git a/drivers/net/pcnet32.c b/drivers/net/pcnet32.c
index 5f994b5..ff92aca 100644
--- a/drivers/net/pcnet32.c
+++ b/drivers/net/pcnet32.c
@@ -282,7 +282,6 @@ struct pcnet32_private {
struct net_device *dev;
struct napi_struct napi;
- struct net_device_stats stats;
char tx_full;
char phycount; /* number of phys found */
int options;
@@ -442,7 +441,9 @@ static struct pcnet32_access pcnet32_dwio = {
static void pcnet32_netif_stop(struct net_device *dev)
{
+#ifdef CONFIG_PCNET32_NAPI
struct pcnet32_private *lp = netdev_priv(dev);
+#endif
dev->trans_start = jiffies;
#ifdef CONFIG_PCNET32_NAPI
napi_disable(&lp->napi);
@@ -452,7 +453,9 @@ static void pcnet32_netif_stop(struct net_device *dev)
static void pcnet32_netif_start(struct net_device *dev)
{
+#ifdef CONFIG_PCNET32_NAPI
struct pcnet32_private *lp = netdev_priv(dev);
+#endif
netif_wake_queue(dev);
#ifdef CONFIG_PCNET32_NAPI
napi_enable(&lp->napi);
@@ -1178,15 +1181,15 @@ static void pcnet32_rx_entry(struct net_device *dev,
* buffers, with only the last correctly noting the error.
*/
if (status & 0x01) /* Only count a general error at the */
- lp->stats.rx_errors++; /* end of a packet. */
+ dev->stats.rx_errors++; /* end of a packet. */
if (status & 0x20)
- lp->stats.rx_frame_errors++;
+ dev->stats.rx_frame_errors++;
if (status & 0x10)
- lp->stats.rx_over_errors++;
+ dev->stats.rx_over_errors++;
if (status & 0x08)
- lp->stats.rx_crc_errors++;
+ dev->stats.rx_crc_errors++;
if (status & 0x04)
- lp->stats.rx_fifo_errors++;
+ dev->stats.rx_fifo_errors++;
return;
}
@@ -1197,13 +1200,13 @@ static void pcnet32_rx_entry(struct net_device *dev,
if (netif_msg_drv(lp))
printk(KERN_ERR "%s: Impossible packet size %d!\n",
dev->name, pkt_len);
- lp->stats.rx_errors++;
+ dev->stats.rx_errors++;
return;
}
if (pkt_len < 60) {
if (netif_msg_rx_err(lp))
printk(KERN_ERR "%s: Runt packet!\n", dev->name);
- lp->stats.rx_errors++;
+ dev->stats.rx_errors++;
return;
}
@@ -1237,7 +1240,7 @@ static void pcnet32_rx_entry(struct net_device *dev,
printk(KERN_ERR
"%s: Memory squeeze, dropping packet.\n",
dev->name);
- lp->stats.rx_dropped++;
+ dev->stats.rx_dropped++;
return;
}
skb->dev = dev;
@@ -1256,7 +1259,7 @@ static void pcnet32_rx_entry(struct net_device *dev,
pkt_len,
PCI_DMA_FROMDEVICE);
}
- lp->stats.rx_bytes += skb->len;
+ dev->stats.rx_bytes += skb->len;
skb->protocol = eth_type_trans(skb, dev);
#ifdef CONFIG_PCNET32_NAPI
netif_receive_skb(skb);
@@ -1264,7 +1267,7 @@ static void pcnet32_rx_entry(struct net_device *dev,
netif_rx(skb);
#endif
dev->last_rx = jiffies;
- lp->stats.rx_packets++;
+ dev->stats.rx_packets++;
return;
}
@@ -1312,21 +1315,21 @@ static int pcnet32_tx(struct net_device *dev)
if (status & 0x4000) {
/* There was a major error, log it. */
int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
- lp->stats.tx_errors++;
+ dev->stats.tx_errors++;
if (netif_msg_tx_err(lp))
printk(KERN_ERR
"%s: Tx error status=%04x err_status=%08x\n",
dev->name, status,
err_status);
if (err_status & 0x04000000)
- lp->stats.tx_aborted_errors++;
+ dev->stats.tx_aborted_errors++;
if (err_status & 0x08000000)
- lp->stats.tx_carrier_errors++;
+ dev->stats.tx_carrier_errors++;
if (err_status & 0x10000000)
- lp->stats.tx_window_errors++;
+ dev->stats.tx_window_errors++;
#ifndef DO_DXSUFLO
if (err_status & 0x40000000) {
- lp->stats.tx_fifo_errors++;
+ dev->stats.tx_fifo_errors++;
/* Ackk! On FIFO errors the Tx unit is turned off! */
/* Remove this verbosity later! */
if (netif_msg_tx_err(lp))
@@ -1337,7 +1340,7 @@ static int pcnet32_tx(struct net_device *dev)
}
#else
if (err_status & 0x40000000) {
- lp->stats.tx_fifo_errors++;
+ dev->stats.tx_fifo_errors++;
if (!lp->dxsuflo) { /* If controller doesn't recover ... */
/* Ackk! On FIFO errors the Tx unit is turned off! */
/* Remove this verbosity later! */
@@ -1351,8 +1354,8 @@ static int pcnet32_tx(struct net_device *dev)
#endif
} else {
if (status & 0x1800)
- lp->stats.collisions++;
- lp->stats.tx_packets++;
+ dev->stats.collisions++;
+ dev->stats.tx_packets++;
}
/* We must free the original skb */
@@ -1849,6 +1852,9 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
lp->mii_if.mdio_read = mdio_read;
lp->mii_if.mdio_write = mdio_write;
+ /* napi.weight is used in both the napi and non-napi cases */
+ lp->napi.weight = lp->rx_ring_size / 2;
+
#ifdef CONFIG_PCNET32_NAPI
netif_napi_add(dev, &lp->napi, pcnet32_poll, lp->rx_ring_size / 2);
#endif
@@ -2471,7 +2477,7 @@ static void pcnet32_tx_timeout(struct net_device *dev)
"%s: transmit timed out, status %4.4x, resetting.\n",
dev->name, lp->a.read_csr(ioaddr, CSR0));
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
- lp->stats.tx_errors++;
+ dev->stats.tx_errors++;
if (netif_msg_tx_err(lp)) {
int i;
printk(KERN_DEBUG
@@ -2541,7 +2547,7 @@ static int pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
lp->tx_ring[entry].status = cpu_to_le16(status);
lp->cur_tx++;
- lp->stats.tx_bytes += skb->len;
+ dev->stats.tx_bytes += skb->len;
/* Trigger an immediate send poll. */
lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
@@ -2586,7 +2592,7 @@ pcnet32_interrupt(int irq, void *dev_id)
/* Log misc errors. */
if (csr0 & 0x4000)
- lp->stats.tx_errors++; /* Tx babble. */
+ dev->stats.tx_errors++; /* Tx babble. */
if (csr0 & 0x1000) {
/*
* This happens when our receive ring is full. This
@@ -2599,7 +2605,7 @@ pcnet32_interrupt(int irq, void *dev_id)
* don't get a rx interrupt, but a missed frame
* interrupt sooner or later.
*/
- lp->stats.rx_errors++; /* Missed a Rx frame. */
+ dev->stats.rx_errors++; /* Missed a Rx frame. */
}
if (csr0 & 0x0800) {
if (netif_msg_drv(lp))
@@ -2661,7 +2667,7 @@ static int pcnet32_close(struct net_device *dev)
spin_lock_irqsave(&lp->lock, flags);
- lp->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
+ dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
if (netif_msg_ifdown(lp))
printk(KERN_DEBUG
@@ -2698,10 +2704,10 @@ static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
unsigned long flags;
spin_lock_irqsave(&lp->lock, flags);
- lp->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
+ dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
spin_unlock_irqrestore(&lp->lock, flags);
- return &lp->stats;
+ return &dev->stats;
}
/* taken from the sunlance driver, which it took from the depca driver */
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 7967240..6b2fc50 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1384,13 +1384,9 @@ static int sky2_up(struct net_device *dev)
sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
TX_RING_SIZE - 1);
- napi_enable(&hw->napi);
-
err = sky2_rx_start(sky2);
- if (err) {
- napi_disable(&hw->napi);
+ if (err)
goto err_out;
- }
/* Enable interrupts from phy/mac for port */
imask = sky2_read32(hw, B0_IMSK);
@@ -1679,13 +1675,13 @@ static int sky2_down(struct net_device *dev)
/* Stop more packets from being queued */
netif_stop_queue(dev);
- napi_disable(&hw->napi);
-
/* Disable port IRQ */
imask = sky2_read32(hw, B0_IMSK);
imask &= ~portirq_msk[port];
sky2_write32(hw, B0_IMSK, imask);
+ synchronize_irq(hw->pdev->irq);
+
sky2_gmac_reset(hw, port);
/* Stop transmitter */
@@ -1699,6 +1695,9 @@ static int sky2_down(struct net_device *dev)
ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
gma_write16(hw, port, GM_GP_CTRL, ctrl);
+ /* Make sure no packets are pending */
+ napi_synchronize(&hw->napi);
+
sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
/* Workaround shared GMAC reset */
@@ -1736,8 +1735,6 @@ static int sky2_down(struct net_device *dev)
/* turn off LED's */
sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
- synchronize_irq(hw->pdev->irq);
-
sky2_tx_clean(dev);
sky2_rx_clean(sky2);
@@ -2048,9 +2045,6 @@ static int sky2_change_mtu(struct net_device *dev, int new_mtu)
err = sky2_rx_start(sky2);
sky2_write32(hw, B0_IMSK, imask);
- /* Unconditionally re-enable NAPI because even if we
- * call dev_close() that will do a napi_disable().
- */
napi_enable(&hw->napi);
if (err)
@@ -2915,6 +2909,7 @@ static void sky2_restart(struct work_struct *work)
rtnl_lock();
sky2_write32(hw, B0_IMSK, 0);
sky2_read32(hw, B0_IMSK);
+ napi_disable(&hw->napi);
for (i = 0; i < hw->ports; i++) {
dev = hw->dev[i];
@@ -2924,6 +2919,7 @@ static void sky2_restart(struct work_struct *work)
sky2_reset(hw);
sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
+ napi_enable(&hw->napi);
for (i = 0; i < hw->ports; i++) {
dev = hw->dev[i];
@@ -4191,7 +4187,6 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
err = -ENOMEM;
goto err_out_free_pci;
}
- netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
if (!disable_msi && pci_enable_msi(pdev) == 0) {
err = sky2_test_msi(hw);
@@ -4207,6 +4202,8 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
goto err_out_free_netdev;
}
+ netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
+
err = request_irq(pdev->irq, sky2_intr,
(hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
dev->name, hw);
@@ -4215,6 +4212,7 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
goto err_out_unregister;
}
sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
+ napi_enable(&hw->napi);
sky2_show_addr(dev);
@@ -4265,23 +4263,18 @@ err_out:
static void __devexit sky2_remove(struct pci_dev *pdev)
{
struct sky2_hw *hw = pci_get_drvdata(pdev);
- struct net_device *dev0, *dev1;
+ int i;
if (!hw)
return;
del_timer_sync(&hw->watchdog_timer);
+ cancel_work_sync(&hw->restart_work);
- flush_scheduled_work();
+ for (i = hw->ports; i >= 0; --i)
+ unregister_netdev(hw->dev[i]);
sky2_write32(hw, B0_IMSK, 0);
- synchronize_irq(hw->pdev->irq);
-
- dev0 = hw->dev[0];
- dev1 = hw->dev[1];
- if (dev1)
- unregister_netdev(dev1);
- unregister_netdev(dev0);
sky2_power_aux(hw);
@@ -4296,9 +4289,9 @@ static void __devexit sky2_remove(struct pci_dev *pdev)
pci_release_regions(pdev);
pci_disable_device(pdev);
- if (dev1)
- free_netdev(dev1);
- free_netdev(dev0);
+ for (i = hw->ports; i >= 0; --i)
+ free_netdev(hw->dev[i]);
+
iounmap(hw->regs);
kfree(hw);
@@ -4328,6 +4321,7 @@ static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
}
sky2_write32(hw, B0_IMSK, 0);
+ napi_disable(&hw->napi);
sky2_power_aux(hw);
pci_save_state(pdev);
@@ -4362,8 +4356,8 @@ static int sky2_resume(struct pci_dev *pdev)
pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
sky2_reset(hw);
-
sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
+ napi_enable(&hw->napi);
for (i = 0; i < hw->ports; i++) {
struct net_device *dev = hw->dev[i];
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 39dd83b..a5e2dc1 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -407,6 +407,24 @@ static inline void napi_enable(struct napi_struct *n)
clear_bit(NAPI_STATE_SCHED, &n->state);
}
+#ifdef CONFIG_SMP
+/**
+ * napi_synchronize - wait until NAPI is not running
+ * @n: napi context
+ *
+ * Wait until NAPI is done being scheduled on this context.
+ * Waits till any outstanding processing completes but
+ * does not disable future activations.
+ */
+static inline void napi_synchronize(const struct napi_struct *n)
+{
+ while (test_bit(NAPI_STATE_SCHED, &n->state))
+ msleep(1);
+}
+#else
+# define napi_synchronize(n) barrier()
+#endif
+
/*
* The DEVICE structure.
* Actually, this whole structure is a big mistake. It mixes I/O
-
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