netdev - [PATCH/RFC 15/17] thermal/ti-soc-thermal: Use bitfield helpers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 22 Nov 2021 16:54:08 +0100
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Tony Lindgren <tony@...mide.com>,
        Russell King <linux@...linux.org.uk>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Paul Walmsley <paul@...an.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Tero Kristo <kristo@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        Benoit Parrot <bparrot@...com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andrew Jeffery <andrew@...id.au>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Joel Stanley <joel@....id.au>,
        Ping-Ke Shih <pkshih@...ltek.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Keerthy <j-keerthy@...com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-media@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-aspeed@...ts.ozlabs.org, openbmc@...ts.ozlabs.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-pm@...r.kernel.org,
        alsa-devel@...a-project.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH/RFC 15/17] thermal/ti-soc-thermal: Use bitfield helpers

Use the field_{get,prep}() helpers, instead of open-coding the same
operations.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
Compile-tested only.
Marked RFC, as this depends on [PATCH 01/17], but follows a different
path to upstream.
---
 drivers/thermal/ti-soc-thermal/ti-bandgap.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
index ea0603b59309f5f0..83a34d698414b177 100644
--- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
@@ -9,6 +9,7 @@
  *   Eduardo Valentin <eduardo.valentin@...com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/clk.h>
 #include <linux/cpu_pm.h>
 #include <linux/device.h>
@@ -80,10 +81,10 @@ do {								\
 	struct temp_sensor_registers *t;			\
 	u32 r;							\
 								\
-	t = bgp->conf->sensors[(id)].registers;		\
+	t = bgp->conf->sensors[(id)].registers;			\
 	r = ti_bandgap_readl(bgp, t->reg);			\
 	r &= ~t->mask;						\
-	r |= (val) << __ffs(t->mask);				\
+	r |= field_prep(t->mask, val);				\
 	ti_bandgap_writel(bgp, r, t->reg);			\
 } while (0)
 
@@ -342,8 +343,7 @@ static void ti_bandgap_read_counter(struct ti_bandgap *bgp, int id,
 
 	tsr = bgp->conf->sensors[id].registers;
 	time = ti_bandgap_readl(bgp, tsr->bgap_counter);
-	time = (time & tsr->counter_mask) >>
-					__ffs(tsr->counter_mask);
+	time = field_get(tsr->counter_mask, time);
 	time = time * 1000 / bgp->clk_rate;
 	*interval = time;
 }
@@ -363,8 +363,7 @@ static void ti_bandgap_read_counter_delay(struct ti_bandgap *bgp, int id,
 	tsr = bgp->conf->sensors[id].registers;
 
 	reg_val = ti_bandgap_readl(bgp, tsr->bgap_mask_ctrl);
-	reg_val = (reg_val & tsr->mask_counter_delay_mask) >>
-				__ffs(tsr->mask_counter_delay_mask);
+	reg_val = field_get(tsr->mask_counter_delay_mask, reg_val);
 	switch (reg_val) {
 	case 0:
 		*interval = 0;
-- 
2.25.1