* [PATCH v3] clk: shmobile: mstp: Fix the is_enabled() operation
@ 2014-05-22 18:02 Geert Uytterhoeven
2014-05-27 1:02 ` Magnus Damm
0 siblings, 1 reply; 3+ messages in thread
From: Geert Uytterhoeven @ 2014-05-22 18:02 UTC (permalink / raw)
To: Mike Turquette
Cc: linux-sh, linux-kernel, Laurent Pinchart, Geert Uytterhoeven
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
The MSTP[SC]R registers have clock stop bits, not clock enable bits. The
bit value should thus be inverted in the is_enabled() operation.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Mike Turquette <mturquette@linaro.org>
---
v3:
- This depends on commit 3c90c55dcde745bed81f6447f24ba96bda43d984
("drivers: sh: compile drivers/sh/pm_runtime.c if
ARCH_SHMOBILE_MULTI"), which has entered mainline in v3.15-rc6.
v2:
- New
---
drivers/clk/shmobile/clk-mstp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clk/shmobile/clk-mstp.c b/drivers/clk/shmobile/clk-mstp.c
index 1f6324e29a80..2d2fe773ac81 100644
--- a/drivers/clk/shmobile/clk-mstp.c
+++ b/drivers/clk/shmobile/clk-mstp.c
@@ -112,7 +112,7 @@ static int cpg_mstp_clock_is_enabled(struct clk_hw *hw)
else
value = clk_readl(group->smstpcr);
- return !!(value & BIT(clock->bit_index));
+ return !(value & BIT(clock->bit_index));
}
static const struct clk_ops cpg_mstp_clock_ops = {
--
1.9.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v3] clk: shmobile: mstp: Fix the is_enabled() operation
2014-05-22 18:02 [PATCH v3] clk: shmobile: mstp: Fix the is_enabled() operation Geert Uytterhoeven
@ 2014-05-27 1:02 ` Magnus Damm
2014-05-27 8:04 ` Geert Uytterhoeven
0 siblings, 1 reply; 3+ messages in thread
From: Magnus Damm @ 2014-05-27 1:02 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Mike Turquette, SH-Linux, linux-kernel, Laurent Pinchart
On Fri, May 23, 2014 at 3:02 AM, Geert Uytterhoeven
<geert+renesas@glider.be> wrote:
> From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>
> The MSTP[SC]R registers have clock stop bits, not clock enable bits. The
> bit value should thus be inverted in the is_enabled() operation.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Cc: Mike Turquette <mturquette@linaro.org>
> ---
> v3:
> - This depends on commit 3c90c55dcde745bed81f6447f24ba96bda43d984
> ("drivers: sh: compile drivers/sh/pm_runtime.c if
> ARCH_SHMOBILE_MULTI"), which has entered mainline in v3.15-rc6.
Hi Geert,
Thanks for resubmitting this fix. Do you intend to get this included
in v3.15 (seems unlikely) or is your target v3.16?
Cheers,
/ magnus
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v3] clk: shmobile: mstp: Fix the is_enabled() operation
2014-05-27 1:02 ` Magnus Damm
@ 2014-05-27 8:04 ` Geert Uytterhoeven
0 siblings, 0 replies; 3+ messages in thread
From: Geert Uytterhoeven @ 2014-05-27 8:04 UTC (permalink / raw)
To: Magnus Damm
Cc: Geert Uytterhoeven, Mike Turquette, SH-Linux, linux-kernel,
Laurent Pinchart
Hi Magnus,
On Tue, May 27, 2014 at 3:02 AM, Magnus Damm <magnus.damm@gmail.com> wrote:
> On Fri, May 23, 2014 at 3:02 AM, Geert Uytterhoeven
> <geert+renesas@glider.be> wrote:
>> From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>>
>> The MSTP[SC]R registers have clock stop bits, not clock enable bits. The
>> bit value should thus be inverted in the is_enabled() operation.
>>
>> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
>> Cc: Mike Turquette <mturquette@linaro.org>
>> ---
>> v3:
>> - This depends on commit 3c90c55dcde745bed81f6447f24ba96bda43d984
>> ("drivers: sh: compile drivers/sh/pm_runtime.c if
>> ARCH_SHMOBILE_MULTI"), which has entered mainline in v3.15-rc6.
>
> Thanks for resubmitting this fix. Do you intend to get this included
> in v3.15 (seems unlikely) or is your target v3.16?
3.16 is OK. The only ill effect is that some clocks may be enabled,
while they're
not needed.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-05-22 18:02 [PATCH v3] clk: shmobile: mstp: Fix the is_enabled() operation Geert Uytterhoeven
2014-05-27 1:02 ` Magnus Damm
2014-05-27 8:04 ` Geert Uytterhoeven
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