• Tomasz Figa's avatar
    clk: divider: Fix overflow in clk_divider_bestdiv · 3c17296f
    Tomasz Figa authored
    Commit c686078 ("clk: divider: Add round to closest divider") introduced
    a helper function to check whether given divisor is the best one instead
    of direct check. However due to int type used instead of unsigned long
    for passing calculated rates to this function in certain cases an
    overflow could occur, for example when trying to obtain maximum possible
    clock rate by calling clk_round_rate(..., UINT_MAX).
    This patch fixes this issue by changing the type of rate, now and best
    arguments of the function to unsigned long, which is the type that
    should be used for clock rates.
    Signed-off-by: default avatarTomasz Figa <t.figa@samsung.com>
    Acked-by: default avatarMaxime Coquelin <maxime.coquelin@st.com>
    Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
clk-divider.c 11.9 KB