From: Alain Volmat Date: Fri, 19 Dec 2025 14:30:35 +0000 (+0100) Subject: media: stm32: dcmipp: bytecap: clear all interrupts upon stream stop X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=222f1279edd9008ee35b62de156ddac84e31443c;p=thirdparty%2Fkernel%2Flinux.git media: stm32: dcmipp: bytecap: clear all interrupts upon stream stop Ensure that there are no pending interrupts after we have stopped the pipeline. Indeed, it could happen that new interrupt has been generated during the stop_streaming processing hence clear them in order to avoid getting a new interrupt right from the start of a next start_streaming. Fixes: 28e0f3772296 ("media: stm32-dcmipp: STM32 DCMIPP camera interface driver") Cc: stable@vger.kernel.org Signed-off-by: Alain Volmat Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c index 1c1b6b48918ee..b18e273ef4a3e 100644 --- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c +++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c @@ -512,6 +512,9 @@ static void dcmipp_bytecap_stop_streaming(struct vb2_queue *vq) /* Disable pipe */ reg_clear(vcap, DCMIPP_P0FSCR, DCMIPP_P0FSCR_PIPEN); + /* Clear any pending interrupts */ + reg_write(vcap, DCMIPP_CMFCR, DCMIPP_CMIER_P0ALL); + spin_lock_irq(&vcap->irqlock); /* Return all queued buffers to vb2 in ERROR state */