Hi, everybody [1.] insmod com20020-isa exits with an Input/Output Error [2.] The driver 'drivers/net/arcnet/com20020-isa' has problems when calling function 'com20020_found' located in 'drivers/net/arcnet/com20020.c' line 205. At this line the driver is requesting the ioport using function 'request_region' and gets the pointer to his own resource-structure although it is expecting 'NULL'. see 8. [3.] com20020, arcnet [4.] 2.4.16 [5.] [6.] insmod arcnet debug=65535 insmod rfc1201 insmod rfc1051 insmod com20020 insmod com20020-isa io=0x340 [7.] [8.] My ARCNet-hardware is a single SMC COM20020 which is onboard our company-specific industrial PC called PROVIT2001. It's has a fixed base-address: 0x340 and uses IRQ 15. The problems happen with all 2.4.x kernels; 2.2.20 does NOT include the bug. Here's the mentioned part of the code source: http://lxr.linux.no (same as in tar-archive from kernel.org) kernel: 2.4.16 file: drivers/net/arcnet/com20020.c 204 /* reserve the I/O region */ 205 if (request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) { 206 free_irq(dev->irq, dev); 207 return -EBUSY; 208 } Possibly is this the right line (like in 'drivers/net/ne.c' line 242) 205 if ( !request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) { This line is working!!! Patch: --- /usr/src/linux-2.4.16-old/drivers/net/arcnet/com20020.c Fri Jan 4 12:15:25 2002 +++ /usr/src/linux-2.4.16/drivers/net/arcnet/com20020.c Fri Jan 4 12:15:55 2002 @@ -202,7 +202,7 @@ return -ENODEV; } /* reserve the I/O region */ - if (request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) { + if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) { free_irq(dev->irq, dev); return -EBUSY; } Best Regards Peter Kronberger - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
