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This is an effort to get rid of all multiplications from allocation
functions in order to prevent integer overflows [1][2].
As the "port_prox" variable is a pointer to "struct port_proxy" and
this structure ends in a flexible array:
struct port_proxy {
[...]
struct t7xx_port ports[];
};
the preferred way in the kernel is to use the struct_size() helper to
do the arithmetic instead of the argument "size + size * count" in the
devm_kzalloc() function.
This way, the code is more readable and safer.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [1]
Link: https://github.com/KSPP/linux/issues/160 [2]
Signed-off-by: Erick Archer <erick.archer@gmx.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Link: https://lore.kernel.org/r/20240224181932.2720-1-erick.archer@gmx.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
848e34ca20