[Fwd: [PATCH] HiSax: fix error checking for hisax_register()]
From: Martin Bachem
Date: Mon May 21 2007 - 11:08:22 EST
Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Martin Bachem <info@xxxxxxxxxxxxxxx>
Acked-by: Karsten Keil <kkeil@xxxxxxx>
--- Begin Message ---
This patch (as875) adds error-checking to the callers of
hisax_register(). It also changes an error pathway in that routine,
making it return an error code rather than 0.
This fixes Bugzilla #7960.
Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
---
Index: usb-2.6/drivers/isdn/hisax/config.c
===================================================================
--- usb-2.6.orig/drivers/isdn/hisax/config.c
+++ usb-2.6/drivers/isdn/hisax/config.c
@@ -1551,7 +1551,7 @@ int hisax_register(struct hisax_d_if *hi
if (retval == 0) { // yuck
cards[i].typ = 0;
nrcards--;
- return retval;
+ return -EINVAL;
}
cs = cards[i].cs;
hisax_d_if->cs = cs;
Index: usb-2.6/drivers/isdn/hisax/hfc_usb.c
===================================================================
--- usb-2.6.orig/drivers/isdn/hisax/hfc_usb.c
+++ usb-2.6/drivers/isdn/hisax/hfc_usb.c
@@ -1306,7 +1306,11 @@ usb_init(hfcusb_data * hfc)
}
/* default Prot: EURO ISDN, should be a module_param */
hfc->protocol = 2;
- hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
+ i = hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
+ if (i) {
+ printk(KERN_INFO "HFC-S USB: hisax_register -> %d\n", i);
+ return i;
+ }
#ifdef CONFIG_HISAX_DEBUG
hfc_debug = debug;
Index: usb-2.6/drivers/isdn/hisax/hisax_fcpcipnp.c
===================================================================
--- usb-2.6.orig/drivers/isdn/hisax/hisax_fcpcipnp.c
+++ usb-2.6/drivers/isdn/hisax/hisax_fcpcipnp.c
@@ -859,7 +859,11 @@ new_adapter(void)
for (i = 0; i < 2; i++)
b_if[i] = &adapter->bcs[i].b_if;
- hisax_register(&adapter->isac.hisax_d_if, b_if, "fcpcipnp", protocol);
+ if (hisax_register(&adapter->isac.hisax_d_if, b_if, "fcpcipnp",
+ protocol) != 0) {
+ kfree(adapter);
+ adapter = NULL;
+ }
return adapter;
}
Index: usb-2.6/drivers/isdn/hisax/st5481_init.c
===================================================================
--- usb-2.6.orig/drivers/isdn/hisax/st5481_init.c
+++ usb-2.6/drivers/isdn/hisax/st5481_init.c
@@ -107,12 +107,17 @@ static int probe_st5481(struct usb_inter
for (i = 0; i < 2; i++)
b_if[i] = &adapter->bcs[i].b_if;
- hisax_register(&adapter->hisax_d_if, b_if, "st5481_usb", protocol);
+ if (hisax_register(&adapter->hisax_d_if, b_if, "st5481_usb",
+ protocol) != 0)
+ goto err_b1;
+
st5481_start(adapter);
usb_set_intfdata(intf, adapter);
return 0;
+ err_b1:
+ st5481_release_b(&adapter->bcs[1]);
err_b:
st5481_release_b(&adapter->bcs[0]);
err_d:
--- End Message ---
--- Begin Message ---
This patch (as876) improves the USB API usage in the HiSax drivers:
Use usb_kill_urb() rather than usb_unlink_urb() when
shutting down.
Remove unnecessary checks for NULL pointers.
Don't initialize urb->lock, because it is private to usbcore.
Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
---
Index: usb-2.6/drivers/isdn/hisax/hfc_usb.c
===================================================================
--- usb-2.6.orig/drivers/isdn/hisax/hfc_usb.c
+++ usb-2.6/drivers/isdn/hisax/hfc_usb.c
@@ -486,7 +486,6 @@ fill_isoc_urb(struct urb *urb, struct us
{
int k;
- spin_lock_init(&urb->lock);
urb->dev = dev;
urb->pipe = pipe;
urb->complete = complete;
@@ -579,16 +578,14 @@ stop_isoc_chain(usb_fifo * fifo)
"HFC-S USB: Stopping iso chain for fifo %i.%i",
fifo->fifonum, i);
#endif
- usb_unlink_urb(fifo->iso[i].purb);
+ usb_kill_urb(fifo->iso[i].purb);
usb_free_urb(fifo->iso[i].purb);
fifo->iso[i].purb = NULL;
}
}
- if (fifo->urb) {
- usb_unlink_urb(fifo->urb);
- usb_free_urb(fifo->urb);
- fifo->urb = NULL;
- }
+ usb_kill_urb(fifo->urb);
+ usb_free_urb(fifo->urb);
+ fifo->urb = NULL;
fifo->active = 0;
}
@@ -1631,11 +1628,9 @@ hfc_usb_probe(struct usb_interface *intf
#endif
/* init the chip and register the driver */
if (usb_init(context)) {
- if (context->ctrl_urb) {
- usb_unlink_urb(context->ctrl_urb);
- usb_free_urb(context->ctrl_urb);
- context->ctrl_urb = NULL;
- }
+ usb_kill_urb(context->ctrl_urb);
+ usb_free_urb(context->ctrl_urb);
+ context->ctrl_urb = NULL;
kfree(context);
return (-EIO);
}
@@ -1687,21 +1682,15 @@ hfc_usb_disconnect(struct usb_interface
i);
#endif
}
- if (context->fifos[i].urb) {
- usb_unlink_urb(context->fifos[i].urb);
- usb_free_urb(context->fifos[i].urb);
- context->fifos[i].urb = NULL;
- }
+ usb_kill_urb(context->fifos[i].urb);
+ usb_free_urb(context->fifos[i].urb);
+ context->fifos[i].urb = NULL;
}
context->fifos[i].active = 0;
}
- /* wait for all URBS to terminate */
- mdelay(10);
- if (context->ctrl_urb) {
- usb_unlink_urb(context->ctrl_urb);
- usb_free_urb(context->ctrl_urb);
- context->ctrl_urb = NULL;
- }
+ usb_kill_urb(context->ctrl_urb);
+ usb_free_urb(context->ctrl_urb);
+ context->ctrl_urb = NULL;
hisax_unregister(&context->d_if);
kfree(context); /* free our structure again */
} /* hfc_usb_disconnect */
Index: usb-2.6/drivers/isdn/hisax/st5481_usb.c
===================================================================
--- usb-2.6.orig/drivers/isdn/hisax/st5481_usb.c
+++ usb-2.6/drivers/isdn/hisax/st5481_usb.c
@@ -407,7 +407,6 @@ fill_isoc_urb(struct urb *urb, struct us
{
int k;
- spin_lock_init(&urb->lock);
urb->dev=dev;
urb->pipe=pipe;
urb->interval = 1;
--- End Message ---