Messages in this thread Patch in this message |  | | Date | Thu, 12 Dec 2013 21:15:56 +0530 | From | Rajesh B Prathipati <> | Subject | [PATCH] powerpc: Make unaligned accesses endian-safe for powerpc |
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From: Rajesh B Prathipati <rprathip@linux.vnet.ibm.com>
The generic put_unaligned/get_unaligned macros were made endian-safe by calling the appropriate endian dependent macros based on the endian type of the powerpc processor.
Signed-off-by: Rajesh B Prathipati <rprathip@linux.vnet.ibm.com> --- This patch applies to linux kernel version 3.12. This patch has been tested and it fixes the problem with linux 3.12 USB stack.
--- linux/arch/powerpc/include/asm/unaligned.h.orig 2013-12-12 00:07:05.329073544 -0200 +++ linux/arch/powerpc/include/asm/unaligned.h 2013-12-11 23:56:52.918630238 -0200 @@ -4,13 +4,18 @@ #ifdef __KERNEL__
/* - * The PowerPC can do unaligned accesses itself in big endian mode. + * The PowerPC can do unaligned accesses itself based on its endian mode. */ #include <linux/unaligned/access_ok.h> #include <linux/unaligned/generic.h>
+#ifdef __LITTLE_ENDIAN__ +#define get_unaligned __get_unaligned_le +#define put_unaligned __put_unaligned_le +#else #define get_unaligned __get_unaligned_be #define put_unaligned __put_unaligned_be +#endif
#endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_UNALIGNED_H */
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