From 10b17004a74c384c6f410af355b0d6d7a168f613 Mon Sep 17 00:00:00 2001
From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Date: Thu, 9 Jan 2020 17:08:00 +0530
Subject: [PATCH] i2c: xiic: Fix the clocking across bind unbind
The recommendation is that the set_active should be done
with pm runtime disabled.
Also fix the remove path for clocking.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
---
drivers/i2c/busses/i2c-xiic.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index d719bf5f9d760d..b17d30c9ab4004 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -798,10 +798,10 @@ static int xiic_i2c_probe(struct platform_device *pdev)
return ret;
}
i2c->dev = &pdev->dev;
- pm_runtime_enable(i2c->dev);
pm_runtime_set_autosuspend_delay(i2c->dev, XIIC_PM_TIMEOUT);
pm_runtime_use_autosuspend(i2c->dev);
pm_runtime_set_active(i2c->dev);
+ pm_runtime_enable(i2c->dev);
ret = devm_request_threaded_irq(&pdev->dev, irq, xiic_isr,
xiic_process, IRQF_ONESHOT,
pdev->name, i2c);
@@ -859,14 +859,16 @@ static int xiic_i2c_remove(struct platform_device *pdev)
/* remove adapter & data */
i2c_del_adapter(&i2c->adap);
- ret = clk_prepare_enable(i2c->clk);
- if (ret) {
- dev_err(&pdev->dev, "Unable to enable clock.\n");
+ ret = pm_runtime_get_sync(i2c->dev);
+ if (ret < 0)
return ret;
- }
+
xiic_deinit(i2c);
+ pm_runtime_put_sync(i2c->dev);
clk_disable_unprepare(i2c->clk);
pm_runtime_disable(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
+ pm_runtime_dont_use_autosuspend(&pdev->dev);
return 0;
}
--
GitLab