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authorIngo Molnar <mingo@elte.hu>2009-12-09 08:24:25 +0100
committerIngo Molnar <mingo@elte.hu>2009-12-09 08:24:57 +0100
commit4c68db38c85188824b21698842b42a62b4f78657 (patch)
tree3ee1c3b22af6713adf669a3bb452ce82bc7fe495 /include/linux/hw_random.h
parent5c0e9f28da84c68ce0ae68b7a75faaf862e156e2 (diff)
parent2b876f95d03e226394b5d360c86127cbefaf614b (diff)
Merge branch 'linus' into x86/urgent
Merge reason: We want to queue up a dependent patch. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/hw_random.h')
-rw-r--r--include/linux/hw_random.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/hw_random.h b/include/linux/hw_random.h
index 7244456e7e6..9bede7633f7 100644
--- a/include/linux/hw_random.h
+++ b/include/linux/hw_random.h
@@ -22,10 +22,12 @@
* @cleanup: Cleanup callback (can be NULL).
* @data_present: Callback to determine if data is available
* on the RNG. If NULL, it is assumed that
- * there is always data available.
+ * there is always data available. *OBSOLETE*
* @data_read: Read data from the RNG device.
* Returns the number of lower random bytes in "data".
- * Must not be NULL.
+ * Must not be NULL. *OSOLETE*
+ * @read: New API. drivers can fill up to max bytes of data
+ * into the buffer. The buffer is aligned for any type.
* @priv: Private data, for use by the RNG driver.
*/
struct hwrng {
@@ -34,6 +36,7 @@ struct hwrng {
void (*cleanup)(struct hwrng *rng);
int (*data_present)(struct hwrng *rng, int wait);
int (*data_read)(struct hwrng *rng, u32 *data);
+ int (*read)(struct hwrng *rng, void *data, size_t max, bool wait);
unsigned long priv;
/* internal. */