linux-kernel - [BUG] checkpatch.pl: false positive: space prohibited before open square bracket

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Message-Id: <20180403190214.23082-1-xypron.glpk@gmx.de>
Date:   Tue,  3 Apr 2018 21:02:14 +0200
From:   Heinrich Schuchardt <xypron.glpk@....de>
To:     Andy Whitcroft <apw@...onical.com>, Joe Perches <joe@...ches.com>
Cc:     linux-kernel@...r.kernel.org,
        Heinrich Schuchardt <xypron.glpk@....de>
Subject: [BUG] checkpatch.pl: false positive: space prohibited before open square bracket

This patch leads to errors "space prohibited before open square
bracket '['" for the asm statement.

In the inline assembler statement the bracket is not used for an index.
Adding a space after a colon or a comma should be allowable.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
---
 foo.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 foo.c

diff --git a/foo.c b/foo.c
new file mode 100644
index 000000000000..7f0ed923f997
--- /dev/null
+++ b/foo.c
@@ -0,0 +1,11 @@
+static inline u32 deref(u32 *addr)
+{
+	int ret;
+
+	asm(
+		"ldr %[out], [%[in]]\n\t"
+		: [out] "=r" (ret)
+		: [in] "r" (addr)
+	);
+	return ret;
+}
-- 
2.16.3