diff mbox series

[RFC/RFT,05/10] i2c: zx2967: use core helper to mark adapter suspended

Message ID 20181210210310.12677-6-wsa+renesas@sang-engineering.com (mailing list archive)
State RFC, archived
Headers show
Series i2c: move handling of suspended adapters to the core | expand

Commit Message

Wolfram Sang Dec. 10, 2018, 9:03 p.m. UTC 
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>
---
 drivers/i2c/busses/i2c-zx2967.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

Comments

Shawn Guo Dec. 11, 2018, 2:12 a.m. UTC | #1 
On Mon, Dec 10, 2018 at 10:03:03PM +0100, Wolfram Sang wrote:
> 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>
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-zx2967.c b/drivers/i2c/busses/i2c-zx2967.c
index b8f9e020d80e..9fa48bbe0719 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, true);
 	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_suspended(&i2c->adap, false);
 
 	return 0;
 }