Re: [PATCH 07/10] i2c: sprd: use core helper to mark adapter suspended
From: Baolin Wang <hidden>
Date: 2018-12-21 09:03:27
Also in:
linux-i2c, linux-pm, linux-renesas-soc, lkml
Hi Wolfram, On Thu, 20 Dec 2018 at 00:48, Wolfram Sang [off-list ref] wrote:
Rejecting transfers should be handled by the core. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Great to see the I2C core can handle this issue. Reviewed-by: Baolin Wang <redacted>
quoted hunk ↗ jump to hunk
--- drivers/i2c/busses/i2c-sprd.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-)diff --git a/drivers/i2c/busses/i2c-sprd.c b/drivers/i2c/busses/i2c-sprd.c index e266d8a713d9..961123529678 100644 --- a/drivers/i2c/busses/i2c-sprd.c +++ b/drivers/i2c/busses/i2c-sprd.c@@ -86,7 +86,6 @@ struct sprd_i2c { u32 count; int irq; int err; - bool is_suspended; }; static void sprd_i2c_set_count(struct sprd_i2c *i2c_dev, u32 count)@@ -284,9 +283,6 @@ static int sprd_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct sprd_i2c *i2c_dev = i2c_adap->algo_data; int im, ret; - if (i2c_dev->is_suspended) - return -EBUSY; - ret = pm_runtime_get_sync(i2c_dev->dev); if (ret < 0) return ret;@@ -590,10 +586,7 @@ static int __maybe_unused sprd_i2c_suspend_noirq(struct device *dev) { struct sprd_i2c *i2c_dev = dev_get_drvdata(dev); - i2c_lock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER); - i2c_dev->is_suspended = true; - i2c_unlock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER); - + i2c_mark_adapter_suspended(&i2c_dev->adap); return pm_runtime_force_suspend(dev); }@@ -601,10 +594,7 @@ static int __maybe_unused sprd_i2c_resume_noirq(struct device *dev) { struct sprd_i2c *i2c_dev = dev_get_drvdata(dev); - i2c_lock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER); - i2c_dev->is_suspended = false; - i2c_unlock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER); - + i2c_mark_adapter_resumed(&i2c_dev->adap); return pm_runtime_force_resume(dev); } --2.11.0
-- Baolin Wang Best Regards _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel