--- Tadeusz Andrzej Kadłubowski <yess@hell.org.pl> wrote:
>On Tue, Dec 03, 2002 at 11:52:03AM -0800, Jose Luis Alarcon wrote:
>> Hi all.
>>
>> I am trying compile a module that contains this line:
>>
>> printk("Device: %d.%d\n", inode->i_rdev >> 8, inode->i_rdev & 0xFF);
>>
>> and the result is that gcc 3.2.1 says that '>>' and '&' are wrong operators for
>> the binary. Why?
>
>My guess:
>i_rdev in inode structure is of type kdev_t, which is defined in
>include/linux/kdev_t.h and contains one member - unsigned short value. Maybe
>try shifting/bitwise anding not on the structure, but on that particular member
>of the structure.
>Then if inode is a pointer to the inode struct, then it would be something
>like:
>
>printk("Device: %d.%d\n", (inode->i_rdev).value >> 8, (inode->i_rdev) & 0xff);
>
>This guess obviously may occur wrong. Please tell, if it worked.
>--
>tadeusz a. kadlubowski
>
Hi Tadeusz, and thanks for your answer.
Your proposed line:
printk("Device: %d.%d\n", (inode->i_rdev).value >> 8, (inode->i_rdev) & 0xff);
gets solve the problem for '>>' but not for '&'. I paste here down the output:
chardev.c:91: wrong operators for the binary &
Why gcc think that & is a binary?. I suppose Ori Pomerantz use '>>' and '&' like
bits level operators.
Thanks you, very much.
Regards.
Jose.
Debian GNU/Linux 'Sid' Kernel 2.4.19 Ext3.
ESware Linux 365 Kernel 2.5.49 ReiserFS.
Registered Linux User #213309.
Memories..... You are talking about memories.
Rick Deckard. Blade Runner.
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