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Date: Sun, 4 Jan 2015 17:06:12 +0100
From: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To: Nishanth Menon <nm@...com>
Cc: Kevin Hilman <khilman@...nel.org>,
Sebastian Reichel <sre@...nel.org>,
Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
David Woodhouse <dwmw2@...radead.org>,
linux-pm@...r.kernel.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] power: avs: smartreflex: Remove unused function
2015-01-03 18:53 GMT+01:00 Nishanth Menon <nm@...com>:
> On 16:58-20150103, Rickard Strandqvist wrote:
>> Remove the function sr_configure_minmax() that is not used anywhere.
>>
>> This was partially found by using a static code analysis program called cppcheck.
>>
>> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
>> ---
>> drivers/power/avs/smartreflex.c | 86 -------------------------------------
>> include/linux/power/smartreflex.h | 1 -
>> 2 files changed, 87 deletions(-)
>>
>> diff --git a/drivers/power/avs/smartreflex.c b/drivers/power/avs/smartreflex.c
>> index db9973b..62b8351 100644
>> --- a/drivers/power/avs/smartreflex.c
>> +++ b/drivers/power/avs/smartreflex.c
>> @@ -460,92 +460,6 @@ int sr_disable_errgen(struct omap_sr *sr)
>> }
>>
>> /**
>> - * sr_configure_minmax() - Configures the SmartReflex to perform AVS using the
>> - * minmaxavg module.
>> - * @sr: SR module to be configured.
>> - *
>> - * This API is to be called from the smartreflex class driver to
>> - * configure the minmaxavg module inside the smartreflex module.
>> - * SR settings if using the ERROR module inside Smartreflex.
>> - * SR CLASS 3 by default uses only the ERROR module where as
>> - * SR CLASS 2 can choose between ERROR module and MINMAXAVG
>> - * module. Returns 0 on success and error value in case of failure.
>> - */
>> -int sr_configure_minmax(struct omap_sr *sr)
>> -{
>> - u32 sr_config, sr_avgwt;
>> - u32 senp_en = 0, senn_en = 0;
>> - u8 senp_shift, senn_shift;
>> -
>> - if (!sr) {
>> - pr_warn("%s: NULL omap_sr from %pF\n", __func__,
>> - (void *)_RET_IP_);
>> - return -EINVAL;
>> - }
>> -
>> - if (!sr->clk_length)
>> - sr_set_clk_length(sr);
>> -
>> - senp_en = sr->senp_mod;
>> - senn_en = sr->senn_mod;
>> -
>> - sr_config = (sr->clk_length << SRCONFIG_SRCLKLENGTH_SHIFT) |
>> - SRCONFIG_SENENABLE |
>> - (sr->accum_data << SRCONFIG_ACCUMDATA_SHIFT);
>> -
>> - switch (sr->ip_type) {
>> - case SR_TYPE_V1:
>> - sr_config |= SRCONFIG_DELAYCTRL;
>> - senn_shift = SRCONFIG_SENNENABLE_V1_SHIFT;
>> - senp_shift = SRCONFIG_SENPENABLE_V1_SHIFT;
>> - break;
>> - case SR_TYPE_V2:
>> - senn_shift = SRCONFIG_SENNENABLE_V2_SHIFT;
>> - senp_shift = SRCONFIG_SENPENABLE_V2_SHIFT;
>> - break;
>> - default:
>> - dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex"
>> - "module without specifying the ip\n", __func__);
>> - return -EINVAL;
>> - }
>> -
>> - sr_config |= ((senn_en << senn_shift) | (senp_en << senp_shift));
>> - sr_write_reg(sr, SRCONFIG, sr_config);
>> - sr_avgwt = (sr->senp_avgweight << AVGWEIGHT_SENPAVGWEIGHT_SHIFT) |
>> - (sr->senn_avgweight << AVGWEIGHT_SENNAVGWEIGHT_SHIFT);
>> - sr_write_reg(sr, AVGWEIGHT, sr_avgwt);
>> -
>> - /*
>> - * Enabling the interrupts if MINMAXAVG module is used.
>> - * TODO: check if all the interrupts are mandatory
>> - */
>> - switch (sr->ip_type) {
>> - case SR_TYPE_V1:
>> - sr_modify_reg(sr, ERRCONFIG_V1,
>> - (ERRCONFIG_MCUACCUMINTEN | ERRCONFIG_MCUVALIDINTEN |
>> - ERRCONFIG_MCUBOUNDINTEN),
>> - (ERRCONFIG_MCUACCUMINTEN | ERRCONFIG_MCUACCUMINTST |
>> - ERRCONFIG_MCUVALIDINTEN | ERRCONFIG_MCUVALIDINTST |
>> - ERRCONFIG_MCUBOUNDINTEN | ERRCONFIG_MCUBOUNDINTST));
>> - break;
>> - case SR_TYPE_V2:
>> - sr_write_reg(sr, IRQSTATUS,
>> - IRQSTATUS_MCUACCUMINT | IRQSTATUS_MCVALIDINT |
>> - IRQSTATUS_MCBOUNDSINT | IRQSTATUS_MCUDISABLEACKINT);
>> - sr_write_reg(sr, IRQENABLE_SET,
>> - IRQENABLE_MCUACCUMINT | IRQENABLE_MCUVALIDINT |
>> - IRQENABLE_MCUBOUNDSINT | IRQENABLE_MCUDISABLEACKINT);
>> - break;
>> - default:
>> - dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex"
>> - "module without specifying the ip\n", __func__);
>> - return -EINVAL;
>> - }
>> -
>> - return 0;
>> -}
>> -
>> -/**
>> * sr_enable() - Enables the smartreflex module.
>> * @sr: pointer to which the SR module to be configured belongs to.
>> * @volt: The voltage at which the Voltage domain associated with
>> diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h
>> index d8b187c3..ffd31af 100644
>> --- a/include/linux/power/smartreflex.h
>> +++ b/include/linux/power/smartreflex.h
>> @@ -303,7 +303,6 @@ int sr_enable(struct omap_sr *sr, unsigned long volt);
>> void sr_disable(struct omap_sr *sr);
>> int sr_configure_errgen(struct omap_sr *sr);
>> int sr_disable_errgen(struct omap_sr *sr);
>> -int sr_configure_minmax(struct omap_sr *sr);
>>
>> /* API to register the smartreflex class driver with the smartreflex driver */
>> int sr_register_class(struct omap_sr_class_data *class_data);
>> --
>> 1.7.10.4
>>
>
> This is potentially used by downstream drivers which are pending cleanup
> of remaining OMAP infrastructure since the transition from hwmod to
> devicetree has multiple impact including the conversion of vc/vp back
> into devicetree supported world (proper regulator framework). while we
> can throw away code by looking at a specific snapshot, it might just
> confuse the future transition.
>
> --
> Regards,
> Nishanth Menon
Hi
Quite ok, I'm just trying to draw attention to the I discover, then
it's up to you if it is something that should be addressed.
Kind regards
Rickard Strandqvist
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