Re: usb audio null pointer

Thomas Sailer (sailer@scs.ch)
11 Nov 2002 12:39:14 +0100

On Fri, 2002-11-08 at 06:11, Kevin Brosius wrote:
> I've tried the latest usb changes from the bk tree, and continue to see
> the attached null pointer problem when trying to install the 'audio'
> module.

Can you mail me a lsusb descriptor dump and cc
linux-usb-devel@lists.sourceforge.net

Thanks
Tom

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 have fixed itself)
@@ -68,7 +71,7 @@
*/

#ifdef MODULE
-static const char version[] = "tms380tr.c: v1.08 14/01/2001 by Christoph Goos, Adam Fritzler\n";
+static const char version[] = "tms380tr.c: v1.09 09/11/2002 by Christoph Goos, Adam Fritzler\n";
#endif

#include <linux/module.h>
@@ -235,7 +238,7 @@
static int __init tms380tr_init_card(struct net_device *dev)
{
if(tms380tr_debug > 3)
- printk("%s: tms380tr_init_card\n", dev->name);
+ printk(KERN_DEBUG "%s: tms380tr_init_card\n", dev->name);

return (0);
}
@@ -253,6 +256,9 @@
struct net_local *tp = (struct net_local *)dev->priv;
int err;

+ /* init the spinlock */
+ spin_lock_init(tp->lock);
+
/* Reset the hardware here. Don't forget to set the station address. */

if(dev->dma > 0)
@@ -278,7 +284,7 @@
tp->timer.data = (unsigned long)dev;
add_timer(&tp->timer);

- printk(KERN_INFO "%s: Adapter RAM size: %dK\n",
+ printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
dev->name, tms380tr_read_ptr(dev));

tms380tr_enable_interrupts(dev);
@@ -341,25 +347,25 @@
tms380tr_init_net_local(dev);

if(tms380tr_debug > 3)
- printk(KERN_INFO "%s: Resetting adapter...\n", dev->name);
+ printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
err = tms380tr_reset_adapter(dev);
if(err < 0)
return (-1);

if(tms380tr_debug > 3)
- printk(KERN_INFO "%s: Bringup diags...\n", dev->name);
+ printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
err = tms380tr_bringup_diags(dev);
if(err < 0)
return (-1);

if(tms380tr_debug > 3)
- printk(KERN_INFO "%s: Init adapter...\n", dev->name);
+ printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
err = tms380tr_init_adapter(dev);
if(err < 0)
return (-1);

if(tms380tr_debug > 3)
- printk(KERN_INFO "%s: Done!\n", dev->name);
+ printk(KERN_DEBUG "%s: Done!\n", dev->name);
return (0);
}

@@ -630,6 +636,7 @@
TPL *tpl;
short length;
unsigned char *buf;
+ unsigned long flags;
struct sk_buff *skb;
int i;
dma_addr_t dmabuf, newbuf;
@@ -641,18 +648,22 @@
* NOTE: We *must* always leave one unused TPL in the chain,
* because otherwise the adapter might send frames twice.
*/
+ spin_lock_irqsave(&tp->lock, flags);
if(tp->TplFree->NextTPLPtr->BusyFlag) /* No free TPL */
{
if (tms380tr_debug > 0)
- printk(KERN_INFO "%s: No free TPL\n", dev->name);
+ printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
+ spin_unlock_irqrestore(&tp->lock, flags);
return;
}

/* Send first buffer from queue */
skb = skb_dequeue(&tp->SendSkbQueue);
if(skb == NULL)
+ {
+ spin_unlock_irqrestore(&tp->lock, flags);
return;
-
+ }
tp->QueueSkb++;
dmabuf = 0;

@@ -700,6 +711,7 @@

/* Let adapter send the frame. */
tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
+ spin_unlock_irqrestore(&tp->lock, flags);
}

return;
@@ -775,7 +787,7 @@
unsigned short irq_type;

if(dev == NULL) {
- printk("%s: irq %d for unknown device.\n", dev->name, irq);
+ printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
return;
}

@@ -787,7 +799,7 @@
irq_type &= STS_IRQ_MASK;

if(!tms380tr_chk_ssb(tp, irq_type)) {
- printk(KERN_INFO "%s: DATA LATE occurred\n", dev->name);
+ printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
break;
}

@@ -845,7 +857,7 @@
break;

default:
- printk(KERN_INFO "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
+ printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
break;
}

@@ -1379,7 +1391,7 @@
do {
retry_cnt--;
if(tms380tr_debug > 3)
- printk(KERN_INFO "BUD-Status: ");
+ printk(KERN_DEBUG "BUD-Status: ");
loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
do { /* Inspect BUD results */
loop_cnt--;
@@ -1388,7 +1400,7 @@
Status &= STS_MASK;

if(tms380tr_debug > 3)
- printk(KERN_INFO " %04X \n", Status);
+ printk(KERN_DEBUG " %04X \n", Status);
/* BUD successfully completed */
if(Status == STS_INITIALIZE)
return (1);
@@ -1445,10 +1457,10 @@

if(tms380tr_debug > 3)
{
- printk(KERN_INFO "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
- printk(KERN_INFO "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
- printk(KERN_INFO "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
- printk(KERN_INFO "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
+ printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
+ printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
+ printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
+ printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
}
/* Maximum: three initialization retries */
retry_cnt = INIT_MAX_RETRIES;
@@ -1799,7 +1811,7 @@

if(tms380tr_debug > 3)
{
- printk("%s: AdapterCheckBlock: ", dev->name);
+ printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
for (i = 0; i < 4; i++)
printk("%04X", AdapterCheckBlock[i]);
printk("\n");
@@ -1876,52 +1888,52 @@
break;

case ILLEGAL_OP_CODE:
- printk("%s: Illegal operation code in firmware\n",
+ printk(KERN_INFO "%s: Illegal operation code in firmware\n",
dev->name);
/* Parm[0-3]: adapter internal register R13-R15 */
break;

case PARITY_ERRORS:
- printk("%s: Adapter internal bus parity error\n",
+ printk(KERN_INFO "%s: Adapter internal bus parity error\n",
dev->name);
/* Parm[0-3]: adapter internal register R13-R15 */
break;

case RAM_DATA_ERROR:
- printk("%s: RAM data error\n", dev->name);
+ printk(KERN_INFO "%s: RAM data error\n", dev->name);
/* Parm[0-1]: MSW/LSW address of RAM location. */
break;

case RAM_PARITY_ERROR:
- printk("%s: RAM parity error\n", dev->name);
+ printk(KERN_INFO "%s: RAM parity error\n", dev->name);
/* Parm[0-1]: MSW/LSW address of RAM location. */
break;

case RING_UNDERRUN:
- printk("%s: Internal DMA underrun detected\n",
+ printk(KERN_INFO "%s: Internal DMA underrun detected\n",
dev->name);
break;

case INVALID_IRQ:
- printk("%s: Unrecognized interrupt detected\n",
+ printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
dev->name);
/* Parm[0-3]: adapter internal register R13-R15 */
break;

case INVALID_ERROR_IRQ:
- printk("%s: Unrecognized error interrupt detected\n",
+ printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
dev->name);
/* Parm[0-3]: adapter internal register R13-R15 */
break;

case INVALID_XOP:
- printk("%s: Unrecognized XOP request detected\n",
+ printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
dev->name);
/* Parm[0-3]: adapter internal register R13-R15 */
break;

default:
- printk("%s: Unknown status", dev->name);
+ printk(KERN_INFO "%s: Unknown status", dev->name);
break;
}

@@ -2072,14 +2084,14 @@

if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
{
- printk(KERN_INFO "%s: (DA=%08lX not recognized)",
+ printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
dev->name,
*(unsigned long *)&tpl->MData[2+2]);
}
else
{
if(tms380tr_debug > 3)
- printk("%s: Directed frame tx'd\n",
+ printk(KERN_DEBUG "%s: Directed frame tx'd\n",
dev->name);
}
}
@@ -2088,7 +2100,7 @@
if(!DIRECTED_FRAME(tpl))
{
if(tms380tr_debug > 3)
- printk("%s: Broadcast frame tx'd\n",
+ printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
dev->name);
}
}
@@ -2165,7 +2177,7 @@
tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);

if(tms380tr_debug > 3)
- printk("%s: Packet Length %04X (%d)\n",
+ printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
dev->name, Length, Length);

/* Indicate the received frame to system the
@@ -2349,12 +2361,11 @@
if (dev->priv == NULL)
{
struct net_local *tms_local;
- dma_addr_t buffer;

dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL | GFP_DMA);
if (dev->priv == NULL)
{
- printk("%s: Out of memory for DMA\n",
+ printk(KERN_INFO "%s: Out of memory for DMA\n",
dev->name);
return -ENOMEM;
}
@@ -2363,16 +2374,15 @@
init_waitqueue_head(&tms_local->wait_for_tok_int);
tms_local->dmalimit = dmalimit;
tms_local->pdev = pdev;
- buffer = pci_map_single(pdev, (void *)tms_local,
+ tms_local->dmabuffer = pci_map_single(pdev, (void *)tms_local,
sizeof(struct net_local), PCI_DMA_BIDIRECTIONAL);
- if (buffer + sizeof(struct net_local) > dmalimit)
+ if (tms_local->dmabuffer + sizeof(struct net_local) > dmalimit)
{
- printk("%s: Memory not accessible for DMA\n",
+ printk(KERN_INFO "%s: Memory not accessible for DMA\n",
dev->name);
tmsdev_term(dev);
return -ENOMEM;
}
- tms_local->dmabuffer = buffer;
}

/* These can be overridden by the card driver if needed */
@@ -2403,7 +2413,7 @@

int init_module(void)
{
- printk("%s", version);
+ printk(KERN_DEBUG "%s", version);

TMS380_module = &__this_module;
return 0;
diff -r -u linux-2.5.47.orig/drivers/net/tokenring/tms380tr.h linux-2.5.47/drivers/net/tokenring/tms380tr.h
--- linux-2.5.47.orig/drivers/net/tokenring/tms380tr.h 2002-11-11 04:28:07.000000000 +0100
+++ linux-2.5.47/drivers/net/tokenring/tms380tr.h 2002-11-11 11:09:43.000000000 +0100
@@ -1135,6 +1135,7 @@
unsigned short (*sifreadw)(struct net_device *, unsigned short);
void (*sifwritew)(struct net_device *, unsigned short, unsigned short);

+ spinlock_t lock; /* SMP protection */
void *tmspriv;
} NET_LOCAL;

diff -r -u linux-2.5.47.orig/drivers/net/tokenring/tmsisa.c linux-2.5.47/drivers/net/tokenring/tmsisa.c
--- linux-2.5.47.orig/drivers/net/tokenring/tmsisa.c 2002-11-11 04:28:03.000000000 +0100
+++ linux-2.5.47/drivers/net/tokenring/tmsisa.c 2002-11-11 11:09:34.000000000 +0100
@@ -16,10 +16,18 @@
* AF Adam Fritzler mid@auk.cx
* JF Jochen Friedrich jochen@scram.de
*
+ * Modification History:
+ * 14-Jan-01 JF Created
+ * 28-Oct-02 JF Fixed probe of card for static compilation.
+ * Fixed module init to not make hotplug go wild.
+ * 09-Nov-02 JF Fixed early bail out on out of memory
+ * situations if multiple cards are found.
+ * Cleaned up some unnecessary console SPAM.
+ *
* TODO:
* 1. Add support for Proteon TR ISA adapters (1392, 1392+)
*/
-static const char version[] = "tmsisa.c: v1.00 14/01/2001 by Jochen Friedrich\n";
+static const char version[] = "tmsisa.c: v1.02 09/11/2002 by Jochen Friedrich\n";

#include <linux/module.h>
#include <linux/kernel.h>
@@ -131,22 +139,53 @@
{
static int versionprinted;
struct net_local *tp;
- int j;
+ int i,j;
struct tms_isa_card *card;

- if(check_region(dev->base_addr, TMS_ISA_IO_EXTENT))
- return -1;
+ if (!dev->base_addr)
+ {
+ for(i = 0; portlist[i]; i++)
+ {
+ if (!request_region(portlist[i], TMS_ISA_IO_EXTENT, isa_cardname))
+ continue;
+
+ if(tms_isa_probe1(portlist[i]))
+ {
+ release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
+ continue;
+ }
+
+ dev->base_addr = portlist[i];
+ break;
+ }
+ if(!dev->base_addr)
+ return -1;
+ }
+ else
+ {
+ if (!request_region(dev->base_addr, TMS_ISA_IO_EXTENT, isa_cardname))
+ return -1;
+
+ if(tms_isa_probe1(dev->base_addr))
+ {
+ release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
+ return -1;
+ }
+ }

- if(tms_isa_probe1(dev->base_addr))
- return -1;
-
- if (versionprinted++ == 0)
- printk("%s", version);
-
/* At this point we have found a valid card. */
-
- if (!request_region(dev->base_addr, TMS_ISA_IO_EXTENT, isa_cardname))
+
+ if (versionprinted++ == 0)
+ printk(KERN_DEBUG "%s", version);
+
+#ifndef MODULE
+ dev = init_trdev(dev, 0);
+ if (!dev)
+ {
+ release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
return -1;
+ }
+#endif

if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL))
{
@@ -158,7 +197,7 @@

tms_isa_read_eeprom(dev);

- printk("%s: Ring Station Address: ", dev->name);
+ printk(KERN_DEBUG "%s: Ring Station Address: ", dev->name);
printk("%2.2x", dev->dev_addr[0]);
for (j = 1; j < 6; j++)
printk(":%2.2x", dev->dev_addr[j]);
@@ -191,7 +230,7 @@

if(irqlist[j] == 0)
{
- printk("%s: AutoSelect no IRQ available\n", dev->name);
+ printk(KERN_INFO "%s: AutoSelect no IRQ available\n", dev->name);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
tmsdev_term(dev);
return -1;
@@ -204,7 +243,7 @@
break;
if (irqlist[j] == 0)
{
- printk("%s: Illegal IRQ %d specified\n",
+ printk(KERN_INFO "%s: Illegal IRQ %d specified\n",
dev->name, dev->irq);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
tmsdev_term(dev);
@@ -213,7 +252,7 @@
if (request_irq(dev->irq, tms380tr_interrupt, 0,
isa_cardname, dev))
{
- printk("%s: Selected IRQ %d not available\n",
+ printk(KERN_INFO "%s: Selected IRQ %d not available\n",
dev->name, dev->irq);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
tmsdev_term(dev);
@@ -232,7 +271,7 @@

if(dmalist[j] == 0)
{
- printk("%s: AutoSelect no DMA available\n", dev->name);
+ printk(KERN_INFO "%s: AutoSelect no DMA available\n", dev->name);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
tmsdev_term(dev);
@@ -246,7 +285,7 @@
break;
if (dmalist[j] == 0)
{
- printk("%s: Illegal DMA %d specified\n",
+ printk(KERN_INFO "%s: Illegal DMA %d specified\n",
dev->name, dev->dma);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
@@ -255,7 +294,7 @@
}
if (request_dma(dev->dma, isa_cardname))
{
- printk("%s: Selected DMA %d not available\n",
+ printk(KERN_INFO "%s: Selected DMA %d not available\n",
dev->name, dev->dma);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
@@ -264,7 +303,7 @@
}
}

- printk("%s: IO: %#4lx IRQ: %d DMA: %d\n",
+ printk(KERN_DEBUG "%s: IO: %#4lx IRQ: %d DMA: %d\n",
dev->name, dev->base_addr, dev->irq, dev->dma);

if (register_trdev(dev) == 0)
@@ -285,7 +324,7 @@
}
else
{
- printk("%s: register_trdev() returned non-zero.\n", dev->name);
+ printk("KERN_INFO %s: register_trdev() returned non-zero.\n", dev->name);
release_region(dev->base_addr, TMS_ISA_IO_EXTENT);
free_irq(dev->irq, dev);
free_dma(dev->dma);
@@ -386,56 +425,61 @@
num = 0;
if (io[0])
{ /* Only probe addresses from command line */
+ dev = init_trdev(NULL, 0);
+ if (!dev)
+ return (-ENOMEM);
for (i = 0; i < ISATR_MAX_ADAPTERS; i++)
{
if (io[i] == 0)
continue;
-
- dev = init_trdev(NULL, 0);
- if (!dev)
- return (-ENOMEM);

dev->base_addr = io[i];
dev->irq = irq[i];
dev->dma = dma[i];

- if (tms_isa_probe(dev))
+ if (!tms_isa_probe(dev))
{
- unregister_netdev(dev);
- kfree(dev);
- }
- else
num++;
+ dev = init_trdev(NULL, 0);
+ if (!dev)
+ goto partial;
+ }
}
+ unregister_netdev(dev);
+ kfree(dev);
}
else
{
+ dev = init_trdev(NULL, 0);
+ if (!dev)
+ return (-ENOMEM);
+
for(i = 0; portlist[i]; i++)
{
if (num >= ISATR_MAX_ADAPTERS)
continue;
-
- dev = init_trdev(NULL, 0);
- if (!dev)
- return (-ENOMEM);

dev->base_addr = portlist[i];
dev->irq = irq[num];
dev->dma = dma[num];

- if (tms_isa_probe(dev))
+ if (!tms_isa_probe(dev))
{
- unregister_netdev(dev);
- kfree(dev);
- }
- else
num++;
+ dev = init_trdev(NULL, 0);
+ if (!dev)
+ goto partial;
+ }
}
+ unregister_netdev(dev);
+ kfree(dev);
}
- printk(KERN_NOTICE "tmsisa.c: %d cards found.\n", num);
+partial:
+ printk(KERN_DEBUG "tmsisa.c: %d cards found.\n", num);
/* Probe for cards. */
if (num == 0) {
printk(KERN_NOTICE "tmsisa.c: No cards found.\n");
+ return (-ENODEV);
}
return (0);
}

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