linux-kernel - [PATCH 2/2] pinctrl: simplify the re-enable old state code in pinctrl_select

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Message-Id: <1364547807-22370-2-git-send-email-richard.genoud@gmail.com>
Date:	Fri, 29 Mar 2013 10:03:27 +0100
From:	Richard Genoud <richard.genoud@...il.com>
To:	Linus Walleij <linus.walleij@...aro.org>,
	Stephen Warren <swarren@...dia.com>
Cc:	linux-kernel@...r.kernel.org,
	Richard Genoud <richard.genoud@...il.com>
Subject: [PATCH 2/2] pinctrl: simplify the re-enable old state code in pinctrl_select_state

Instead of just enabling the settings that were disabled in the 1st
loop, it's simpler to recall pinctrl_select_state with the old state.

Signed-off-by: Richard Genoud <richard.genoud@...il.com>
---
 drivers/pinctrl/core.c |   22 +++-------------------
 1 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index ddd9a150..caf9bf9 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -937,26 +937,10 @@ unapply_new_state:
 			pinmux_disable_setting(setting2);
 	}
 
-	if (old_state) {
-		list_for_each_entry(setting, &old_state->settings, node) {
-			bool found = false;
-			if (setting->type != PIN_MAP_TYPE_MUX_GROUP)
-				continue;
-			list_for_each_entry(setting2, &state->settings, node) {
-				if (setting2->type != PIN_MAP_TYPE_MUX_GROUP)
-					continue;
-				if (setting2->data.mux.group ==
-						setting->data.mux.group) {
-					found = true;
-					break;
-				}
-			}
-			if (!found)
-				pinmux_enable_setting(setting);
-		}
-	}
+	/* There's no infinite recursive loop here because p->state is NULL */
+	if (old_state)
+		pinctrl_select_state_locked(p, old_state);
 
-	p->state = old_state;
 	return ret;
 }
 
-- 
1.7.2.5

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