blob: 3336eb2e17be4b0c5d9462eb88bd72a8f534c7ca [file] [log] [blame]
From ae1670d1241b0797367ab341673ec70d5aef9d75 Mon Sep 17 00:00:00 2001
From: Alain Volmat <alain.volmat@st.com>
Date: Fri, 25 Oct 2019 16:04:24 +0200
Subject: [PATCH] i2c: stm32f7: fix & reorder remove & probe error handling
commit 53aaaa5d9b1e95eb40e877fbffa6f964a8394bb7 upstream.
Add missing dma channels free calls in case of error during probe
and reorder the remove function so that dma channels are freed after
the i2c adapter is deleted.
Overall, reorder the remove function so that probe error handling order
and remove function order are same.
Fixes: 7ecc8cfde553 ("i2c: i2c-stm32f7: Add DMA support")
Signed-off-by: Alain Volmat <alain.volmat@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
index 8f077cb966de..3fa0711bc77c 100644
--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -1981,6 +1981,11 @@ static int stm32f7_i2c_probe(struct platform_device *pdev)
pm_runtime_set_suspended(i2c_dev->dev);
pm_runtime_dont_use_autosuspend(i2c_dev->dev);
+ if (i2c_dev->dma) {
+ stm32_i2c_dma_free(i2c_dev->dma);
+ i2c_dev->dma = NULL;
+ }
+
clk_free:
clk_disable_unprepare(i2c_dev->clk);
@@ -1991,21 +1996,21 @@ static int stm32f7_i2c_remove(struct platform_device *pdev)
{
struct stm32f7_i2c_dev *i2c_dev = platform_get_drvdata(pdev);
- if (i2c_dev->dma) {
- stm32_i2c_dma_free(i2c_dev->dma);
- i2c_dev->dma = NULL;
- }
-
i2c_del_adapter(&i2c_dev->adap);
pm_runtime_get_sync(i2c_dev->dev);
- clk_disable_unprepare(i2c_dev->clk);
-
pm_runtime_put_noidle(i2c_dev->dev);
pm_runtime_disable(i2c_dev->dev);
pm_runtime_set_suspended(i2c_dev->dev);
pm_runtime_dont_use_autosuspend(i2c_dev->dev);
+ if (i2c_dev->dma) {
+ stm32_i2c_dma_free(i2c_dev->dma);
+ i2c_dev->dma = NULL;
+ }
+
+ clk_disable_unprepare(i2c_dev->clk);
+
return 0;
}
--
2.7.4