From: Alain Volmat alain.volmat@st.com
[ Upstream commit 53aaaa5d9b1e95eb40e877fbffa6f964a8394bb7 ]
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: Sasha Levin sashal@kernel.org --- drivers/i2c/busses/i2c-stm32f7.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index b24e7b937f21..84cfed17ff4f 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -1985,6 +1985,11 @@ pm_disable: 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);
@@ -1995,21 +2000,21 @@ 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; }