To reduce indentation and improve the readability of
ia_css_stream_destroy(), extract the ISP2401-specific cleanup block into
a new static helper function, ia_css_stream_destroy_isp2401().

Signed-off-by: Jose A. Perez de Azpillaga <azpijr@gmail.com>
---
 drivers/staging/media/atomisp/pci/sh_css.c | 89 +++++++++++-----------
 1 file changed, 46 insertions(+), 43 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/sh_css.c b/drivers/staging/media/atomisp/pci/sh_css.c
index 8d8b82dc59f1..0e848758723f 100644
--- a/drivers/staging/media/atomisp/pci/sh_css.c
+++ b/drivers/staging/media/atomisp/pci/sh_css.c
@@ -8189,10 +8189,53 @@ ia_css_stream_create(const struct ia_css_stream_config *stream_config,
 	return err;
 }
 
+static void ia_css_stream_destroy_isp2401(struct ia_css_stream *stream)
+{
+	int i, j;
+
+	for (i = 0; i < stream->num_pipes; i++) {
+		struct ia_css_pipe *entry = stream->pipes[i];
+		unsigned int sp_thread_id;
+		struct sh_css_sp_pipeline_terminal *terminal;
+
+		assert(entry);
+		if (entry) {
+			if (!ia_css_pipeline_get_sp_thread_id(
+				ia_css_pipe_get_pipe_num(entry), &sp_thread_id))
+				return;
+
+			terminal = &sh_css_sp_group.pipe_io[sp_thread_id].input;
+
+			for (j = 0; j < IA_CSS_STREAM_MAX_ISYS_STREAM_PER_CH; j++) {
+				ia_css_isys_stream_h isys_stream =
+					&terminal->context.virtual_input_system_stream[j];
+				if (stream->config.isys_config[j].valid && isys_stream->valid)
+					ia_css_isys_stream_destroy(isys_stream);
+			}
+		}
+	}
+
+	if (stream->config.mode == IA_CSS_INPUT_MODE_BUFFERED_SENSOR) {
+		for (i = 0; i < stream->num_pipes; i++) {
+			struct ia_css_pipe *entry = stream->pipes[i];
+			/*
+			 * free any mipi frames that are remaining:
+			 * some test stream create-destroy cycles do
+			 * not generate output frames
+			 * and the mipi buffer is not freed in the
+			 * deque function
+			 */
+			if (entry)
+				free_mipi_frames(entry);
+		}
+	}
+	stream_unregister_with_csi_rx(stream);
+}
+
 int
 ia_css_stream_destroy(struct ia_css_stream *stream)
 {
-	int i, j;
+	int i;
 	int err = 0;
 
 	IA_CSS_ENTER_PRIVATE("stream = %p", stream);
@@ -8206,48 +8249,8 @@ ia_css_stream_destroy(struct ia_css_stream *stream)
 
 	if ((stream->last_pipe) &&
 	    ia_css_pipeline_is_mapped(stream->last_pipe->pipe_num)) {
-		if (IS_ISP2401) {
-			for (i = 0; i < stream->num_pipes; i++) {
-				struct ia_css_pipe *entry = stream->pipes[i];
-				unsigned int sp_thread_id;
-				struct sh_css_sp_pipeline_terminal *sp_pipeline_input_terminal;
-
-				assert(entry);
-				if (entry) {
-					/* get the SP thread id */
-					if (!ia_css_pipeline_get_sp_thread_id(
-							ia_css_pipe_get_pipe_num(entry), &sp_thread_id))
-						return -EINVAL;
-
-					/* get the target input terminal */
-					sp_pipeline_input_terminal =
-						&sh_css_sp_group.pipe_io[sp_thread_id].input;
-
-					for (j = 0; j < IA_CSS_STREAM_MAX_ISYS_STREAM_PER_CH; j++) {
-						ia_css_isys_stream_h isys_stream =
-							&sp_pipeline_input_terminal->context.virtual_input_system_stream[j];
-						if (stream->config.isys_config[j].valid && isys_stream->valid)
-							ia_css_isys_stream_destroy(isys_stream);
-					}
-				}
-			}
-
-			if (stream->config.mode == IA_CSS_INPUT_MODE_BUFFERED_SENSOR) {
-				for (i = 0; i < stream->num_pipes; i++) {
-					struct ia_css_pipe *entry = stream->pipes[i];
-					/*
-					 * free any mipi frames that are remaining:
-					 * some test stream create-destroy cycles do
-					 * not generate output frames
-					 * and the mipi buffer is not freed in the
-					 * deque function
-					 */
-					if (entry)
-						free_mipi_frames(entry);
-				}
-			}
-			stream_unregister_with_csi_rx(stream);
-		}
+		if (IS_ISP2401)
+			ia_css_stream_destroy_isp2401(stream);
 
 		for (i = 0; i < stream->num_pipes; i++) {
 			struct ia_css_pipe *curr_pipe = stream->pipes[i];
-- 
2.53.0