Re: yenta-socket oops with 2.5.73-mm3, 2.5.74, 2.5.74-mm1

From: Claus-Justus Heine (ch@dot-heine.de)
Date: Sun Jul 06 2003 - 11:56:54 EST


Hi,

have the same problem, however ...

> void pcmcia_parse_events(struct pcmcia_socket *s, u_int events)
> {
> + if (unlikely(&s->init_done == 0))

... this cannot work because of the "&". Of course, the _address_ of
s->init_done is always non-zero. Also, the problems are related to yenta_socket.c

The interrupt occurs during irq-probing in yenta-socket.c, so the problem should
be fixed _inside_ yenta-socket.c and not touch any other part of the pcmcia stuff.

I.e. add that "init_done" flag to "struct yenta_socket"; not to struct socket.
It should work then, just trying now ...

Greetings

Claus

P.s.:
I'm not subscribed to linux-kernel, please Cc: to my address. Thanks.


--- yenta_socket.c.old 2003-07-02 22:49:32.000000000 +0200
+++ yenta_socket.c 2003-07-06 16:13:55.000000000 +0200
@@ -426,7 +426,8 @@
 
         events = yenta_events(socket);
         if (events) {
- pcmcia_parse_events(&socket->socket, events);
+ if (likely(socket->init_done))
+ pcmcia_parse_events(&socket->socket, events);
                 return IRQ_HANDLED;
         }
         return IRQ_NONE;
@@ -501,8 +502,8 @@
         socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS;
         socket->socket.map_size = 0x1000;
         socket->socket.pci_irq = socket->cb_irq;
- socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
         socket->socket.cb_dev = socket->dev;
+ socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
 
         printk("Yenta IRQ list %04x, PCI irq%d\n", socket->socket.irq_mask, socket->cb_irq);
 }
@@ -821,6 +822,7 @@
 {
         struct yenta_socket *socket;
         struct cardbus_override_struct *d;
+ int ret;
         
         socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
         if (!socket)
@@ -888,12 +890,18 @@
                 add_timer(&socket->poll_timer);
         }
 
+ socket->init_done = 0; /* should still be 0, paranoya ... */
+
         /* Figure out what the dang thing can do for the PCMCIA layer... */
         yenta_get_socket_capabilities(socket, isa_interrupts);
         printk("Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
 
         /* Register it with the pcmcia layer.. */
- return pcmcia_register_socket(&socket->socket);
+ ret = pcmcia_register_socket(&socket->socket);
+ if (ret == 0) {
+ socket->init_done = 1;
+ }
+ return ret;
 }
 
 
--- yenta_socket.h.old 2003-07-02 22:45:05.000000000 +0200
+++ yenta_socket.h 2003-07-06 16:05:40.000000000 +0200
@@ -103,6 +103,8 @@
 
         struct pcmcia_socket socket;
 
+ unsigned int init_done:1; /* used during initialization */
+
         /* A few words of private data for special stuff of overrides... */
         unsigned int private[8];
 };

-
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