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Message-ID: <874lj0ew6t.fsf@anholt.net>
Date: Mon, 21 May 2018 10:48:58 -0700
From: Eric Anholt <eric@...olt.net>
To: Yisheng Xie <xieyisheng1@...wei.com>, linux-kernel@...r.kernel.org
Cc: Yisheng Xie <xieyisheng1@...wei.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Stefan Wahren <stefan.wahren@...e.com>,
linux-clk@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 12/33] clk: bcm2835: use match_string() helper
Yisheng Xie <xieyisheng1@...wei.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@...libre.com>
> Cc: Stephen Boyd <sboyd@...nel.org>
> Cc: Eric Anholt <eric@...olt.net>
> Cc: Stefan Wahren <stefan.wahren@...e.com>
> Cc: linux-clk@...r.kernel.org
> Cc: linux-rpi-kernel@...ts.infradead.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Signed-off-by: Yisheng Xie <xieyisheng1@...wei.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@...olt.net>
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