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firewire: ohci: optimize find_branch_descriptor()
authorClemens Ladisch <clemens@ladisch.de>
Tue, 12 Apr 2011 05:54:59 +0000 (07:54 +0200)
committerStefan Richter <stefanr@s5r6.in-berlin.de>
Tue, 19 Apr 2011 18:00:11 +0000 (20:00 +0200)
commit0ff8fbc61727c926883eec381fbd3d32d1fab504
tree37261139bea74569bf4a41bccd5d47d4b406b6a3tree | snapshot
parentda28947e7e3602669e27d5e9ce787436ed662fa4commit | diff
firewire: ohci: optimize find_branch_descriptor()

When z==2, the condition "key == 2" is superfluous because it cannot
occur without "b == 3", as a descriptor with b!=3 and key==2 would be
an OUTPUT_MORE_IMMEDIATE descriptor which cannot be used alone.

Also remove magic numbers and needless computations on the b field.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
drivers/firewire/ohci.c diff | blob | history
Port of xen3.3 xenlinux code to Ubuntu packaged SUSE kernel (3.2.10)