[...]
#if [ "$CARCH" = "x86_64" ]; then
# source=('acpi_call-x86_64.patch')
# sha1sums=('2cfb22deca7687b87d3cbd06dbd1d59e73210f62')
#fi
[...]
## x86_64 Patch
# if [ "$CARCH" = "x86_64" ]; then
# msg "Patching for x86_64 systems"
# patch -p1 -i ${srcdir}/acpi_call-x86_64.patch
# fi
[...]