Linus Torvalds wrote:
I don't think there really is _ever_ any reason to use the 10-byte version
if the 6-byte version is expected to work. Is there?
Yes, but not really important: 10-byte allows a 16-bit allocation
length (additional data section), where 6-byte only allows 8-bit.
However, the mode pages the kernel requests from the device are normally
<= 256 bytes.
In general, your intuition is correct. use_10_for_foo is largely meant
for the subclass of "SCSI" devices which often don't bother to implement
the 6-byte commands, forcing the software driver to emulate 6-byte.
use_10_for_foo allows the software driver to eliminate that in-kernel
emulation code.
Jeff
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
