From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-i2c@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
Hans de Goede <hdegoede@redhat.com>,
linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Jun Nie <jun.nie@linaro.org>, Shawn Guo <shawnguo@kernel.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH 05/10] i2c: zx2967: use core helper to mark adapter suspended
Date: Wed, 19 Dec 2018 17:48:21 +0100 [thread overview]
Message-ID: <20181219164827.20985-6-wsa+renesas@sang-engineering.com> (raw)
In-Reply-To: <20181219164827.20985-1-wsa+renesas@sang-engineering.com>
Rejecting transfers should be handled by the core. Also, this will
ensure proper locking which was forgotten in this open coded version
and make sure resume mark is set after enabling clocks (not before).
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
---
drivers/i2c/busses/i2c-zx2967.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/i2c/busses/i2c-zx2967.c b/drivers/i2c/busses/i2c-zx2967.c
index b8f9e020d80e..7b98d97da3c6 100644
--- a/drivers/i2c/busses/i2c-zx2967.c
+++ b/drivers/i2c/busses/i2c-zx2967.c
@@ -66,7 +66,6 @@ struct zx2967_i2c {
int msg_rd;
u8 *cur_trans;
u8 access_cnt;
- bool is_suspended;
int error;
};
@@ -313,9 +312,6 @@ static int zx2967_i2c_xfer(struct i2c_adapter *adap,
int ret;
int i;
- if (i2c->is_suspended)
- return -EBUSY;
-
zx2967_set_addr(i2c, msgs->addr);
for (i = 0; i < num; i++) {
@@ -470,7 +466,7 @@ static int __maybe_unused zx2967_i2c_suspend(struct device *dev)
{
struct zx2967_i2c *i2c = dev_get_drvdata(dev);
- i2c->is_suspended = true;
+ i2c_mark_adapter_suspended(&i2c->adap);
clk_disable_unprepare(i2c->clk);
return 0;
@@ -480,8 +476,8 @@ static int __maybe_unused zx2967_i2c_resume(struct device *dev)
{
struct zx2967_i2c *i2c = dev_get_drvdata(dev);
- i2c->is_suspended = false;
clk_prepare_enable(i2c->clk);
+ i2c_mark_adapter_resumed(&i2c->adap);
return 0;
}
--
2.11.0
next prev parent reply other threads:[~2018-12-19 16:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-19 16:48 [PATCH 00/10] i2c: move handling of suspended adapters to the core Wolfram Sang
2018-12-19 16:48 ` [PATCH 01/10] i2c: add suspended flag and accessors for i2c adapters Wolfram Sang
2018-12-19 17:22 ` Lukas Wunner
2018-12-19 18:36 ` Hans de Goede
2018-12-19 22:33 ` Wolfram Sang
2018-12-20 10:00 ` Hans de Goede
2018-12-20 21:09 ` Rafael J. Wysocki
2018-12-21 10:43 ` Hans de Goede
2018-12-21 14:50 ` Wolfram Sang
2018-12-21 18:40 ` Peter Rosin
2018-12-21 18:50 ` Wolfram Sang
2018-12-19 16:48 ` [PATCH 02/10] i2c: reject new transfers when adapters are suspended Wolfram Sang
2018-12-19 16:48 ` [PATCH 03/10] i2c: synquacer: remove unused is_suspended flag Wolfram Sang
2018-12-19 16:48 ` [PATCH 04/10] i2c: brcmstb: use core helper to mark adapter suspended Wolfram Sang
2018-12-19 16:48 ` Wolfram Sang [this message]
2018-12-19 16:48 ` [PATCH 06/10] i2c: sprd: don't use pdev as variable name for struct device * Wolfram Sang
2018-12-21 8:58 ` Baolin Wang
2018-12-19 16:48 ` [PATCH 07/10] i2c: sprd: use core helper to mark adapter suspended Wolfram Sang
2018-12-21 9:03 ` Baolin Wang
2018-12-19 16:48 ` [PATCH 08/10] i2c: exynos5: " Wolfram Sang
2018-12-19 16:48 ` [PATCH 09/10] i2c: s3c2410: " Wolfram Sang
2018-12-19 16:48 ` [PATCH 10/10] i2c: rcar: add suspend/resume support Wolfram Sang
2019-01-08 20:09 ` [PATCH 00/10] i2c: move handling of suspended adapters to the core Wolfram Sang
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