In function:
int
hostQueryModuleInit
(
void
)
{
if (!pci_present ())
{
printk
(
KERN_WARNING "%s.%d::No pci... Aborting.\n",
__FILE__,
__LINE__
);
return -1;
}
printk
(
KERN_INFO "After pci_present\n"
);
// ... Get dynamic major number from kernel
queryMajorNum = register_chrdev (0, "queryd", &queryDevice_fops);
printk
(
KERN_INFO "After register_chrdev\n"
);
if (queryMajorNum < 0)
{
printk
(
KERN_ERR "%s.%d::register_chrdev(%s) returned (%d)...\n",
__FILE__,
__LINE__,
"queryd",
queryMajorNum
);
return queryMajorNum;
}
queryDevRegistered = 1;
//hostQueryRegisterSymbols ();
printk
(
KERN_INFO "After hostQueryRegisterSymbols:%u \n",
queryMajorNum
);
/*WRONG!!!*/ return queryMajorNum;
/*MUST BE: return 0;
}
If register_chrdev success you don't need to return queryMajorNum,
as a general rule:
if a module intialization function you need to return 0 if everything success, !=0 if fail.
You module is wrong because you register a chrdev, and this success... but because of
your module_init return !=0 init_module fails without releasing resources allocated.
Hope this help.
-------------------------------------------------------------------------------------------------------------------------------------------------------------
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-------------------------------------------------------------------------------------------------------------------------------------------------------------
Daniele Bellucci
--
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