Re: [PATCH][2.5] mwave updates

[Andrew Morton <akpm@digeo.com>]

Paul B Schroeder <paulsch@haywired.net> wrote:
>
> The patch can be found here...
> 
> http://www.haywired.net/~paulsch/patches/mwave-2.5.63.patch
> 

I tested this patch on a machine which does not have mwave hardware.  The
driver was statically linked into the kernel.  It died...

smapi::smapi_init, ERROR invalid usSmapiID
mwave: tp3780i::tp3780I_InitializeBoardData: Error: SMAPI is not available on this machine
mwave: mwavedd::mwave_init: Error: Failed to initialize board data
mwave: mwavedd::mwave_init: Error: Failed to initialize

Program received signal SIGSEGV, Segmentation fault.
hash_and_remove (dir=0x0, name=0xc0338e70 "3780i_dma")
    at include/asm/semaphore.h:115
115     {
(gdb) bt
#0  hash_and_remove (dir=0x0, name=0xc0338e70 "3780i_dma")
    at include/asm/semaphore.h:115
#1  0xc0180295 in sysfs_remove_file (kobj=0xc04243d4, attr=0xc0377130)
    at fs/sysfs/inode.c:771
#2  0xc022f289 in device_remove_file (dev=0xc04243a0, attr=0xc0377130)
    at drivers/base/core.c:121
#3  0xc0247aa2 in mwave_exit () at drivers/char/mwave/mwavedd.c:520
#4  0xc03c6720 in mwave_init () at drivers/char/mwave/mwavedd.c:663
#5  0xc03b4804 in do_initcalls () at init/main.c:472
#6  0xc03b4833 in do_basic_setup () at init/main.c:497
#7  0xc01050f6 in init (unused=0x0) at init/main.c:535

(gdb) up
#1  0xc0180295 in sysfs_remove_file (kobj=0xc04243d4, attr=0xc0377130)
    at fs/sysfs/inode.c:771
771             hash_and_remove(kobj->dentry,attr->name);
(gdb) p kobj
$1 = (struct kobject *) 0xc04243d4
(gdb) p *kobj
$2 = {name = '\0' <repeats 15 times>, refcount = {counter = 0}, entry = {
    next = 0x0, prev = 0x0}, parent = 0x0, kset = 0x0, ktype = 0x0, 
  dentry = 0x0}