clk: check ->determine/round_rate() return value in clk_calc_new_rates

->determine_rate() and ->round_rate() can return the closest rate to the
requested one or an error code.
clk_calc_new_rates is assuming these functions can't return a negative
value, which leads to a undefined behavior when the clk implementation
returns such an error code.
Fix this by returning NULL in case ->determine_rate() or ->round_rate()
returned an error code.

Signed-off-by: Boris Brezillon <[email protected]>
Signed-off-by: Michael Turquette <[email protected]>

0 files changed, 0 insertions, 0 deletions