On Tue, Dec 03, 2013 at 03:10:52PM +0100, Johannes Berg wrote: > From: Emmanuel Grumbach <[email protected]> > > This was added in 3.8 and not used until now. > Since it it being used by the wireless stack, backport it. > > Signed-off-by: Emmanuel Grumbach <[email protected]> > Signed-off-by: Johannes Berg <[email protected]> > --- > backport/backport-include/linux/random.h | 3 +++ > backport/compat/compat-3.8.c | 32 > ++++++++++++++++++++++++++++++++ > 2 files changed, 35 insertions(+) > > diff --git a/backport/backport-include/linux/random.h > b/backport/backport-include/linux/random.h > index 812ce7f..e915106 100644 > --- a/backport/backport-include/linux/random.h > +++ b/backport/backport-include/linux/random.h > @@ -8,6 +8,9 @@ > #define prandom_seed(_seed) srandom32(_seed) > #define prandom_u32() random32() > #define prandom_u32_state(_state) prandom32(_state) > +/* backport 6582c665d6b882dad8329e05749fbcf119f1ab88 */ > +#define prandom_bytes LINUX_BACKPORT(prandom_bytes) > +void prandom_bytes(void *buf, int bytes); > #endif > > #endif /* __BACKPORT_RANDOM_H */ > diff --git a/backport/compat/compat-3.8.c b/backport/compat/compat-3.8.c > index d43d386..70d3375 100644 > --- a/backport/compat/compat-3.8.c > +++ b/backport/compat/compat-3.8.c > @@ -16,6 +16,7 @@ > #include <linux/module.h> > #include "hid-ids.h" > #include <linux/netdevice.h> > +#include <linux/random.h> > > #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,8)) > void netdev_set_default_ethtool_ops(struct net_device *dev, > @@ -419,6 +420,37 @@ int vm_iomap_memory(struct vm_area_struct *vma, > phys_addr_t start, unsigned long > } > EXPORT_SYMBOL_GPL(vm_iomap_memory); > > +/** > + * prandom_bytes - get the requested number of pseudo-random bytes > + * @buf: where to copy the pseudo-random bytes to > + * @bytes: the requested number of bytes > + */ > +void prandom_bytes(void *buf, int bytes) > +{ > + unsigned char *p = buf; > + int i; > + > + for (i = 0; i < round_down(bytes, sizeof(u32)); i += sizeof(u32)) { > + u32 random = random32(); > + int j; > + > + for (j = 0; j < sizeof(u32); j++) { > + p[i + j] = random; > + random >>= BITS_PER_BYTE; > + } > + } > + > + if (i < bytes) { > + u32 random = random32(); > + > + for (; i < bytes; i++) { > + p[i] = random; > + random >>= BITS_PER_BYTE; > + } > + } > +} > +EXPORT_SYMBOL_GPL(prandom_bytes_state);
Where is prandom_bytes_state defined? Did you mean prandom_bytes ? This breaks compilation right now. Luis -- To unsubscribe from this list: send the line "unsubscribe backports" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
