Re: [PATCH 12/33] clk: bcm2835: use match_string() helper

Eric Anholt
2018-05-21T17:49:06Z

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Yisheng Xie <xieyisheng1@huawei.com> writes:

> match_string() returns the index of an array for a matching string,
> which can be used intead of open coded variant.
>
> Cc: Michael Turquette <mturquette@baylibre.com>
> Cc: Stephen Boyd <sboyd@kernel.org>
> Cc: Eric Anholt <eric@anholt.net>
> Cc: Stefan Wahren <stefan.wahren@i2se.com>
> Cc: linux-clk@vger.kernel.org
> Cc: linux-rpi-kernel@lists.infradead.org
> Cc: linux-arm-kernel@lists.infradead.org
> Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
> ---
> drivers/clk/bcm/clk-bcm2835.c | 14 ++++++--------
> 1 file changed, 6 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
> index fa0d5c8..a27c0d2 100644
> --- a/drivers/clk/bcm/clk-bcm2835.c
> +++ b/drivers/clk/bcm/clk-bcm2835.c
> @@ -1395,8 +1395,7 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
> struct bcm2835_clock *clock;
> struct clk_init_data init;
> const char *parents[1 << CM_SRC_BITS];
> - size_t i, j;
> - int ret;
> + int i, ret;
>
> /*
> * Replace our strings referencing parent clocks with the
> @@ -1405,12 +1404,11 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
> for (i = 0; i < data->num_mux_parents; i++) {
> parents[i] = data->parents[i];
>
> - for (j = 0; j < ARRAY_SIZE(cprman_parent_names); j++) {
> - if (strcmp(parents[i], cprman_parent_names[j]) == 0) {
> - parents[i] = cprman->real_parent_names[j];
> - break;
> - }
> - }
> + ret = match_string(cprman_parent_names,
> + ARRAY_SIZE(cprman_parent_names),
> + parents[i]);
> + if (ret >= 0)
> + parents[i] = cprman->real_parent_names[ret];

Reviewed-by: Eric Anholt <eric@anholt.net>

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