Thread (13 messages) 13 messages, 4 authors, 2019-10-30

Re: [PATCH 5/6] powerpc: Mark archrandom.h functions __must_check

From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2019-10-30 11:37:17
Also in: linux-arch, linux-arm-kernel, linux-s390

Richard Henderson [off-list ref] writes:
We cannot use the pointer output without validating the
success of the random read.
You _can_, but you must not. </pedant>
Signed-off-by: Richard Henderson <redacted>
---
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <redacted>
Cc: Michael Ellerman <mpe@ellerman.id.au>
---
 arch/powerpc/include/asm/archrandom.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
Acked-by: Michael Ellerman <mpe@ellerman.id.au>

cheers
quoted hunk ↗ jump to hunk
diff --git a/arch/powerpc/include/asm/archrandom.h b/arch/powerpc/include/asm/archrandom.h
index f8a887c8b7f8..ee214b153a71 100644
--- a/arch/powerpc/include/asm/archrandom.h
+++ b/arch/powerpc/include/asm/archrandom.h
@@ -6,17 +6,17 @@
 
 #include <asm/machdep.h>
 
-static inline bool arch_get_random_long(unsigned long *v)
+static inline bool __must_check arch_get_random_long(unsigned long *v)
 {
 	return false;
 }
 
-static inline bool arch_get_random_int(unsigned int *v)
+static inline bool __must_check arch_get_random_int(unsigned int *v)
 {
 	return false;
 }
 
-static inline bool arch_get_random_seed_long(unsigned long *v)
+static inline bool __must_check arch_get_random_seed_long(unsigned long *v)
 {
 	if (ppc_md.get_random_seed)
 		return ppc_md.get_random_seed(v);
@@ -24,7 +24,7 @@ static inline bool arch_get_random_seed_long(unsigned long *v)
 	return false;
 }
 
-static inline bool arch_get_random_seed_int(unsigned int *v)
+static inline bool __must_check arch_get_random_seed_int(unsigned int *v)
 {
 	unsigned long val;
 	bool rc;
-- 
2.17.1
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help