Re: [PATCH] clk-gate: fix bit # check in clk_register_gate()

From: Mike Turquette
Date: Sat Jan 17 2015 - 17:01:41 EST


Quoting Sergei Shtylyov (2014-12-24 06:43:27)
> In case CLK_GATE_HIWORD_MASK flag is passed to clk_register_gate(), the bit #
> should be no higher than 15, however the corresponding check is obviously off-
> by-one.
>
> Fixes: 045779942c04 ("clk: gate: add CLK_GATE_HIWORD_MASK")
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>

Applied to clk-next. Thanks! Is this causing a visible regression for
you? It is not a new bug so I'd prefer to send it though clk-next unless
something is blowing up on your end.

>
> ---
> The patch is against Linus' repo because the 'clk-fixes' branch in Mike
> Turquette's 'linux.git' repo at Linaro seems very outdated. BTW, the repo
> at kernel.org specified by the MAINTAINERS file doesn't seem to exist --
> can something be done about that?

The clk-fixes branch at git.linaro.org is now updated and the clk tree
at git.kernel.org is also live. Blame the holidays.

For now they will mirror each other (and linux-next will continue to
reference the one at git.linaro.org until 3.19 is released).

Regards,
Mike

>
> drivers/clk/clk-gate.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: linux/drivers/clk/clk-gate.c
> ===================================================================
> --- linux.orig/drivers/clk/clk-gate.c
> +++ linux/drivers/clk/clk-gate.c
> @@ -128,7 +128,7 @@ struct clk *clk_register_gate(struct dev
> struct clk_init_data init;
>
> if (clk_gate_flags & CLK_GATE_HIWORD_MASK) {
> - if (bit_idx > 16) {
> + if (bit_idx > 15) {
> pr_err("gate bit exceeds LOWORD field\n");
> return ERR_PTR(-EINVAL);
> }
>
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