Re: [BUG] link error in usbserial with gcc3.2

[Ed Tomlinson]

I dug into this a bit more.  It would seem to be a compiler
bug, where it tries to branch back 129 bytes...  I will report
it using debian channels.

The following change will let things compile until gcc is fixed.

diff -Nru a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1114,6 +1114,7 @@
 		port->magic = USB_SERIAL_PORT_MAGIC;
 		INIT_WORK(&port->work, usb_serial_port_softint, port);
 		init_MUTEX (&port->sem);
+		dev_info(&interface->dev, "endpoints\n");
 	}
 
        /* if this device type has an attach function, call it */

This is will the following gcc:

oscar% gcc --version
gcc (GCC) 3.2.2

Ed Tomlinson

On February 11, 2003 08:13 am, Ed Tomlinson wrote:
> This has been around for a while...  Its becoming a bit
> if a pain since debian unstable flipped to gcc3.2 as its
> default compiler.  This works with gcc2.95.  Is gcc3.2
> detecting an error 2.95 misses?
>
>   ld -m elf_i386  -r -o drivers/usb/input/hid.o
> drivers/usb/input/hid-core.o drivers/usb/input/hid-input.o ld -m elf_i386 
> -r -o drivers/usb/input/hid.ko drivers/usb/input/hid.o init/vermagic.o make
> -f scripts/Makefile.build obj=drivers/usb/serial
>    rm -f drivers/usb/serial/built-in.o; ar rcs
> drivers/usb/serial/built-in.o gcc
> -Wp,-MD,drivers/usb/serial/.usb-serial.o.d -D__KERNEL__ -Iinclude -Wall
> -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common
> -pipe -mpreferred-stack-boundary=2 -march=k6
> -Iinclude/asm-i386/mach-default -nostdinc -iwithprefix include -DMODULE  
> -DKBUILD_BASENAME=usb_serial -DKBUILD_MODNAME=usbserial -c -o
> drivers/usb/serial/usb-serial.o drivers/usb/serial/usb-serial.c {standard
> input}: Assembler messages:
> {standard input}:2603: Error: value of -129 too large for field of 1 bytes
> at 5959 make[3]: *** [drivers/usb/serial/usb-serial.o] Error 1
> make[2]: *** [drivers/usb/serial] Error 2
> make[1]: *** [drivers/usb] Error 2
> make: *** [drivers] Error 2
>
> I have a pl2303 based device.
>
> Ed Tomlinson