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26 lines
832 B
Diff
26 lines
832 B
Diff
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From 3687701e8d252864f440f91f1aedf8ffd58d6ee6 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Mon, 25 Nov 2024 21:51:13 +0000
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Subject: [PATCH] misc: rp1-pio: Fix parameter checks wihout client
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Passing bad parameters to an API call without a pio pointer will cause
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a NULL pointer exception when the persistent error is set. Guard
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against that.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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include/linux/pio_rp1.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/include/linux/pio_rp1.h
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+++ b/include/linux/pio_rp1.h
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@@ -20,7 +20,7 @@
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#endif
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#define bad_params_if(client, test) \
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- ({ bool f = (test); if (f) pio_set_error(client, -EINVAL); \
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+ ({ bool f = (test); if (f && client) pio_set_error(client, -EINVAL); \
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if (f && PARAM_WARNINGS_ENABLED) WARN_ON((test)); \
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f; })
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