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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Fix an issue where the mapped DMA buffer was not unmapped. Fixes: 7ecc8cfde553 ("i2c: i2c-stm32f7: Add DMA support") Acked-by: Alain Volmat Signed-off-by: Clément Le Goffic --- drivers/i2c/busses/i2c-stm32f7.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index e4aaeb2262d0..042386b4cabe 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -1554,6 +1554,8 @@ static irqreturn_t stm32f7_i2c_handle_isr_errs(struct stm32f7_i2c_dev *i2c_dev, if (i2c_dev->use_dma) { stm32f7_i2c_disable_dma_req(i2c_dev); dmaengine_terminate_async(dma->chan_using); + dma_unmap_single(i2c_dev->dev, dma->dma_buf, dma->dma_len, + dma->dma_data_dir); } i2c_dev->master_mode = false; @@ -1622,6 +1624,8 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) if (i2c_dev->use_dma) { stm32f7_i2c_disable_dma_req(i2c_dev); dmaengine_terminate_async(dma->chan_using); + dma_unmap_single(i2c_dev->dev, dma->dma_buf, dma->dma_len, + dma->dma_data_dir); } f7_msg->result = -ENXIO; } @@ -1642,6 +1646,8 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data) dev_dbg(i2c_dev->dev, "<%s>: Timed out\n", __func__); stm32f7_i2c_disable_dma_req(i2c_dev); dmaengine_terminate_async(dma->chan_using); + dma_unmap_single(i2c_dev->dev, dma->dma_buf, dma->dma_len, + dma->dma_data_dir); f7_msg->result = -ETIMEDOUT; } } -- 2.43.0