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Commit 126a3fd2 authored by françois romieu's avatar françois romieu Committed by David S. Miller
Browse files

eni: fix driver remove function and driver probe error path. 



- add eni_do_release() to balance eni_do_init
- turn the zeroes DMA area into a per device data

Signed-off-by: default avatarFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4823cd38

drivers/atm/eni.c

+63 −35
Original line number Diff line number Diff line
@@ -156,9 +156,6 @@ static int tx_complete = 0,dma_complete = 0,queued = 0,requeued = 0, 


static struct atm_dev *eni_boards = NULL;



static u32 *cpu_zeroes = NULL; /* aligned "magic" zeroes */

static dma_addr_t zeroes;



/* Read/write registers on card */

#define eni_in(r)	readl(eni_dev->reg+(r)*4)

#define eni_out(v,r)	writel((v),eni_dev->reg+(r)*4)
@@ -1138,8 +1135,10 @@ DPRINTK("doing direct send\n"); /* @@@ well, this doesn't work anyway */ 
					skb_shinfo(skb)->frags[i].page_offset,

				    skb_frag_size(&skb_shinfo(skb)->frags[i]));

	}

	if (skb->len & 3)

		put_dma(tx->index,eni_dev->dma,&j,zeroes,4-(skb->len & 3));

	if (skb->len & 3) {

		put_dma(tx->index, eni_dev->dma, &j, eni_dev->zero.dma,

			4 - (skb->len & 3));

	}

	/* JK for AAL5 trailer - AAL0 doesn't need it, but who cares ... */

	eni_dev->dma[j++] = (((tx->tx_pos+size) & (tx->words-1)) <<

	     MID_DMA_COUNT_SHIFT) | (tx->index << MID_DMA_CHAN_SHIFT) |
@@ -1728,6 +1727,7 @@ static int __devinit eni_do_init(struct atm_dev *dev) 
		    "mapping\n",dev->number);

		return error;

	}

	eni_dev->ioaddr = base;

	eni_dev->base_diff = real_base - (unsigned long) base;

	/* id may not be present in ASIC Tonga boards - check this @@@ */

	if (!eni_dev->asic) {
@@ -1789,6 +1789,14 @@ static int __devinit eni_do_init(struct atm_dev *dev) 
	goto out;

}



static void eni_do_release(struct atm_dev *dev)

{

	struct eni_dev *ed = ENI_DEV(dev);



	dev->phy->stop(dev);

	dev->phy = NULL;

	iounmap(ed->ioaddr);

}



static int __devinit eni_start(struct atm_dev *dev)

{
@@ -2224,44 +2232,56 @@ static int __devinit eni_init_one(struct pci_dev *pci_dev, 
{

	struct atm_dev *dev;

	struct eni_dev *eni_dev;

	int error = -ENOMEM;



	DPRINTK("eni_init_one\n");

	struct eni_zero *zero;

	int rc;



	if (pci_enable_device(pci_dev)) {

		error = -EIO;

		goto out0;

	}

	rc = pci_enable_device(pci_dev);

	if (rc < 0)

		goto out;



	rc = -ENOMEM;

	eni_dev = kmalloc(sizeof(struct eni_dev), GFP_KERNEL);

	if (!eni_dev) goto out0;

	if (!cpu_zeroes) {

		cpu_zeroes = pci_alloc_consistent(pci_dev,ENI_ZEROES_SIZE,

		    &zeroes);

		if (!cpu_zeroes) goto out1;

	}

	if (!eni_dev)

		goto err_disable;



	zero = &eni_dev->zero;

	zero->addr = pci_alloc_consistent(pci_dev, ENI_ZEROES_SIZE, &zero->dma);

	if (!zero->addr)

		goto err_kfree;



	dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &ops, -1, NULL);

	if (!dev) goto out2;

	if (!dev)

		goto err_free_consistent;



	dev->dev_data = eni_dev;

	pci_set_drvdata(pci_dev, dev);

	eni_dev->pci_dev = pci_dev;

	dev->dev_data = eni_dev;

	eni_dev->asic = ent->driver_data;

	error = eni_do_init(dev);

	if (error) goto out3;

	error = eni_start(dev);

	if (error) goto out3;



	rc = eni_do_init(dev);

	if (rc < 0)

		goto err_unregister;



	rc = eni_start(dev);

	if (rc < 0)

		goto err_eni_release;



	eni_dev->more = eni_boards;

	eni_boards = dev;

	return 0;

out3:

out:

	return rc;



err_eni_release:

	eni_do_release(dev);

err_unregister:

	atm_dev_deregister(dev);

out2:

	pci_free_consistent(eni_dev->pci_dev,ENI_ZEROES_SIZE,cpu_zeroes,zeroes);

	cpu_zeroes = NULL;

out1:

err_free_consistent:

	pci_free_consistent(pci_dev, ENI_ZEROES_SIZE, zero->addr, zero->dma);

err_kfree:

	kfree(eni_dev);

out0:

	return error;

err_disable:

	pci_disable_device(pci_dev);

	goto out;

}
@@ -2273,9 +2293,17 @@ static struct pci_device_id eni_pci_tbl[] = { 
MODULE_DEVICE_TABLE(pci,eni_pci_tbl);





static void __devexit eni_remove_one(struct pci_dev *pci_dev)

static void __devexit eni_remove_one(struct pci_dev *pdev)

{

	/* grrr */

	struct atm_dev *dev = pci_get_drvdata(pdev);

	struct eni_dev *ed = ENI_DEV(dev);

	struct eni_zero *zero = &ed->zero;



	eni_do_release(dev);

	atm_dev_deregister(dev);

	pci_free_consistent(pdev, ENI_ZEROES_SIZE, zero->addr, zero->dma);

	kfree(ed);

	pci_disable_device(pdev);

}

drivers/atm/eni.h

+5 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ struct eni_dev { 
	u32 events;			/* pending events */

	/*-------------------------------- base pointers into Midway address

					   space */

	void __iomem *ioaddr;

	void __iomem *phy;		/* PHY interface chip registers */

	void __iomem *reg;		/* register base */

	void __iomem *ram;		/* RAM base */
@@ -86,6 +87,10 @@ struct eni_dev { 
	wait_queue_head_t tx_wait;	/* for close */

	int tx_bw;			/* remaining bandwidth */

	u32 dma[TX_DMA_BUF*2];		/* DMA request scratch area */

	struct eni_zero {		/* aligned "magic" zeroes */

		u32 *addr;

		dma_addr_t dma;

	} zero;

	int tx_mult;			/* buffer size multiplier (percent) */

	/*-------------------------------- RX part */

	u32 serv_read;			/* host service read index */