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    Subject[PATCH 24/33] clk: tegra: bpmp: change tegra_bpmp_clk_round_rate() return logic
    Date
    This patch updates the round_rate() logic here to return zero instead of a
    negative number on error.

    In conjunction with higher-level changes associated with acting on the
    return value of clk_ops->round_rate() it is then possible to have
    clk_ops->round_rate() return values from 1 Hz to ULONG_MAX Hz instead of
    the current limitation of 1 Hz to LONG_MAX Hz.

    Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
    Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
    Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
    Cc: Michael Turquette <mturquette@baylibre.com>
    Cc: Stephen Boyd <sboyd@codeaurora.org>
    Cc: Thierry Reding <thierry.reding@gmail.com>
    Cc: Jonathan Hunter <jonathanh@nvidia.com>
    Cc: linux-clk@vger.kernel.org
    Cc: linux-tegra@vger.kernel.org
    Cc: linux-kernel@vger.kernel.org
    ---
    drivers/clk/tegra/clk-bpmp.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/clk/tegra/clk-bpmp.c b/drivers/clk/tegra/clk-bpmp.c
    index 0c1197b..4297bb2 100644
    --- a/drivers/clk/tegra/clk-bpmp.c
    +++ b/drivers/clk/tegra/clk-bpmp.c
    @@ -190,7 +190,7 @@ static unsigned long tegra_bpmp_clk_round_rate(struct clk_hw *hw,

    err = tegra_bpmp_clk_transfer(clk->bpmp, &msg);
    if (err < 0)
    - return err;
    + return 0;

    return response.rate;
    }
    --
    2.7.4
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