From: Rob Herring <robh@kernel.org>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] efi/libstub: add strrchr function
Date: Thu, 1 Mar 2018 09:27:44 -0600 [thread overview]
Message-ID: <20180301152744.30718-1-robh@kernel.org> (raw)
libfdt gained a new dependency on strrchr, so copy the implementation
from lib/string.c.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
---
Please ack. This is a dependency for dtc/libfdt sync with upstream.
drivers/firmware/efi/libstub/string.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/firmware/efi/libstub/string.c b/drivers/firmware/efi/libstub/string.c
index ed10e3f602c5..c1a7e58a5af7 100644
--- a/drivers/firmware/efi/libstub/string.c
+++ b/drivers/firmware/efi/libstub/string.c
@@ -56,3 +56,20 @@ int strncmp(const char *cs, const char *ct, size_t count)
return 0;
}
#endif
+
+#ifndef __HAVE_ARCH_STRRCHR
+/**
+ * strrchr - Find the last occurrence of a character in a string
+ * @s: The string to be searched
+ * @c: The character to search for
+ */
+char *strrchr(const char *s, int c)
+{
+ const char *last = NULL;
+ do {
+ if (*s == (char)c)
+ last = s;
+ } while (*s++);
+ return (char *)last;
+}
+#endif
--
2.14.1
next reply other threads:[~2018-03-01 15:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-01 15:27 Rob Herring [this message]
2018-03-01 15:48 ` [PATCH] efi/libstub: add strrchr function Ard Biesheuvel
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