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Message-ID: <20150103185130.GA5950@amd>
Date: Sat, 3 Jan 2015 19:51:30 +0100
From: Pavel Machek <pavel@....cz>
To: Nishanth Menon <nm@...com>, linux-omap@...r.kernel.org
Cc: edubezval@...il.com, rui.zhang@...el.com,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH] cleanup ti-soc-thermal
On Sat 2015-01-03 11:48:04, Nishanth Menon wrote:
> On 12:19-20150103, Pavel Machek wrote:
> > Simplify code by removing goto's where they point to simple return.
> >
> > Avoid confusing |= on error values.
>
> Please split these up into chunks of related changes. there is white
> space and quiet a few other changes all mixed in.
Do you believe that the patch is too big to be understood? I don't
think it is.
It is four screens, and it is pretty obvious it does not change any
code.
If Eduardo asks me, I may do it, but it will waste my time, time of
everyone else on the list, and will not really improve anything.
[Patch left below, so others can see we are talking 4 screens of code.]
> Also please cc linux-omap mailing list as well to get adequate
> audience.
Can do.
Pavel
> >
> > Correct whitespace.
> >
> > Signed-off-by: Pavel Machek <pavel@....cz>
> >
> > diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
> > index 634b6ce..3b4e72f 100644
> > --- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c
> > +++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
> > @@ -263,18 +264,13 @@ static
> > int ti_bandgap_adc_to_mcelsius(struct ti_bandgap *bgp, int adc_val, int *t)
> > {
> > const struct ti_bandgap_data *conf = bgp->conf;
> > - int ret = 0;
> >
> > /* look up for temperature in the table and return the temperature */
> > - if (adc_val < conf->adc_start_val || adc_val > conf->adc_end_val) {
> > - ret = -ERANGE;
> > - goto exit;
> > - }
> > + if (adc_val < conf->adc_start_val || adc_val > conf->adc_end_val)
> > + return -ERANGE;
> >
> > *t = bgp->conf->conv_table[adc_val - conf->adc_start_val];
> > -
> > -exit:
> > - return ret;
> > + return 0;
> > }
> >
> > /**
> > @@ -295,16 +291,14 @@ int ti_bandgap_mcelsius_to_adc(struct ti_bandgap *bgp, long temp, int *adc)
> > {
> > const struct ti_bandgap_data *conf = bgp->conf;
> > const int *conv_table = bgp->conf->conv_table;
> > - int high, low, mid, ret = 0;
> > + int high, low, mid;
> >
> > low = 0;
> > high = conf->adc_end_val - conf->adc_start_val;
> > mid = (high + low) / 2;
> >
> > - if (temp < conv_table[low] || temp > conv_table[high]) {
> > - ret = -ERANGE;
> > - goto exit;
> > - }
> > + if (temp < conv_table[low] || temp > conv_table[high])
> > + return -ERANGE;
> >
> > while (low < high) {
> > if (temp < conv_table[mid])
> > @@ -315,9 +309,7 @@ int ti_bandgap_mcelsius_to_adc(struct ti_bandgap *bgp, long temp, int *adc)
> > }
> >
> > *adc = conf->adc_start_val + low;
> > -
> > -exit:
> > - return ret;
> > + return 0;
> > }
> >
> > /**
> > @@ -343,13 +335,11 @@ int ti_bandgap_add_hyst(struct ti_bandgap *bgp, int adc_val, int hyst_val,
> > */
> > ret = ti_bandgap_adc_to_mcelsius(bgp, adc_val, &temp);
> > if (ret < 0)
> > - goto exit;
> > + return ret;
> >
> > temp += hyst_val;
> >
> > ret = ti_bandgap_mcelsius_to_adc(bgp, temp, sum);
> > -
> > -exit:
> > return ret;
> > }
> >
> > @@ -468,22 +458,18 @@ exit:
> > */
> > static inline int ti_bandgap_validate(struct ti_bandgap *bgp, int id)
> > {
> > - int ret = 0;
> > -
> > if (!bgp || IS_ERR(bgp)) {
> > pr_err("%s: invalid bandgap pointer\n", __func__);
> > - ret = -EINVAL;
> > - goto exit;
> > + return -EINVAL;
> > }
> >
> > if ((id < 0) || (id >= bgp->conf->sensor_count)) {
> > dev_err(bgp->dev, "%s: sensor id out of range (%d)\n",
> > __func__, id);
> > - ret = -ERANGE;
> > + return -ERANGE;
> > }
> >
> > -exit:
> > - return ret;
> > + return 0;
> > }
> >
> > /**
> > @@ -511,12 +497,10 @@ static int _ti_bandgap_write_threshold(struct ti_bandgap *bgp, int id, int val,
> >
> > ret = ti_bandgap_validate(bgp, id);
> > if (ret)
> > - goto exit;
> > + return ret;
> >
> > - if (!TI_BANDGAP_HAS(bgp, TALERT)) {
> > - ret = -ENOTSUPP;
> > - goto exit;
> > - }
> > + if (!TI_BANDGAP_HAS(bgp, TALERT))
> > + return -ENOTSUPP;
> >
> > ts_data = bgp->conf->sensors[id].ts_data;
> > tsr = bgp->conf->sensors[id].registers;
> > @@ -529,17 +513,15 @@ static int _ti_bandgap_write_threshold(struct ti_bandgap *bgp, int id, int val,
> > }
> >
> > if (ret)
> > - goto exit;
> > + return ret;
> >
> > ret = ti_bandgap_mcelsius_to_adc(bgp, val, &adc_val);
> > if (ret < 0)
> > - goto exit;
> > + return ret;
> >
> > spin_lock(&bgp->lock);
> > ret = ti_bandgap_update_alert_threshold(bgp, id, adc_val, hot);
> > spin_unlock(&bgp->lock);
> > -
> > -exit:
> > return ret;
> > }
> >
> > @@ -582,7 +564,7 @@ static int _ti_bandgap_read_threshold(struct ti_bandgap *bgp, int id,
> >
> > temp = ti_bandgap_readl(bgp, tsr->bgap_threshold);
> > temp = (temp & mask) >> __ffs(mask);
> > - ret |= ti_bandgap_adc_to_mcelsius(bgp, temp, &temp);
> > + ret = ti_bandgap_adc_to_mcelsius(bgp, temp, &temp);
> > if (ret) {
> > dev_err(bgp->dev, "failed to read thot\n");
> > ret = -EIO;
> > @@ -1220,11 +1222,10 @@ int ti_bandgap_probe(struct platform_device *pdev)
> > goto free_irqs;
> > }
> >
> > - bgp->div_clk = clk_get(NULL, bgp->conf->div_ck_name);
> > + bgp->div_clk = clk_get(NULL, bgp->conf->div_ck_name);
> > ret = IS_ERR(bgp->div_clk);
> > if (ret) {
> > - dev_err(&pdev->dev,
> > - "failed to request div_ts_ck clock ref\n");
> > + dev_err(&pdev->dev, "failed to request div_ts_ck clock ref\n");
> > ret = PTR_ERR(bgp->div_clk);
> > goto free_irqs;
> > }
> > diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> > index 5fd0386..c62a6de 100644
> > --- a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> > +++ b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> > @@ -76,7 +76,7 @@ static inline int ti_thermal_hotspot_temperature(int t, int s, int c)
> > }
> >
> > /* thermal zone ops */
> > -/* Get temperature callback function for thermal zone*/
> > +/* Get temperature callback function for thermal zone */
> > static inline int __ti_thermal_get_temp(void *devdata, long *temp)
> > {
> > struct thermal_zone_device *pcb_tz = NULL;
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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