[PATCH 6.1 713/798] comedi: ni_routing: tools: Check when the file could not be opened

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6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ruffalo Lavoisier <ruffalolavoisier@xxxxxxxxx>

[ Upstream commit 5baeb157b341b1d26a5815aeaa4d3bb9e0444fda ]

- After fopen check NULL before using the file pointer use

Signed-off-by: Ruffalo Lavoisier <RuffaloLavoisier@xxxxxxxxx>
Link: https://lore.kernel.org/r/20240906203025.89588-1-RuffaloLavoisier@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/comedi/drivers/ni_routing/tools/convert_c_to_py.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/comedi/drivers/ni_routing/tools/convert_c_to_py.c b/drivers/comedi/drivers/ni_routing/tools/convert_c_to_py.c
index d55521b5bdcb2..892a66b2cea66 100644
--- a/drivers/comedi/drivers/ni_routing/tools/convert_c_to_py.c
+++ b/drivers/comedi/drivers/ni_routing/tools/convert_c_to_py.c
@@ -140,6 +140,11 @@ int main(void)
 {
 	FILE *fp = fopen("ni_values.py", "w");
 
+	if (fp == NULL) {
+		fprintf(stderr, "Could not open file!");
+		return -1;
+	}
+
 	/* write route register values */
 	fprintf(fp, "ni_route_values = {\n");
 	for (int i = 0; ni_all_route_values[i]; ++i)
-- 
2.43.0







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