linux-kernel - [PATCH] h8300:let the checker know that size

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Message-Id: <20180530210343.22320-1-luc.vanoostenryck@gmail.com>
Date:   Wed, 30 May 2018 23:03:43 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>
Cc:     uclinux-h8-devel@...ts.sourceforge.jp,
        linux-kernel@...r.kernel.org,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Subject: [PATCH] h8300:let the checker know that size_t is ulong

All 64bit archs use unsigned long for size_t and most 32bit
archs use 'unsigned int'. By default, this is what is assumed
by sparse.

However, on h8300 (a 32bit arch) size_t is unsigned long which
can led sparse to emit wrong warnings.

Fix this by passing to sparse the flag -msize-long, telling it
that size_t is unsigned long.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
---
 arch/h8300/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile
index e1c02ca23..eaac6685f 100644
--- a/arch/h8300/Makefile
+++ b/arch/h8300/Makefile
@@ -22,6 +22,8 @@ KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\"
 KBUILD_AFLAGS += $(aflags-y)
 LDFLAGS += $(ldflags-y)
 
+CHECKFLAGS += -msize-long
+
 ifeq ($(CROSS_COMPILE),)
 CROSS_COMPILE := h8300-unknown-linux-
 endif
-- 
2.17.0