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mac80211: backport sg_init_marker()

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2018-09-06 13:30:24 +02:00
parent f9e50a9468
commit 057893024e
1 changed files with 30 additions and 0 deletions
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30
package/kernel/mac80211/patches/009-backport_sg_init_marker.patch Normal file
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@ -0,0 +1,30 @@
--- a/backport-include/linux/scatterlist.h
+++ b/backport-include/linux/scatterlist.h
@@ -102,4 +102,27 @@ size_t sg_pcopy_from_buffer(struct scatt
#endif /* LINUX_VERSION_IS_LESS(3, 11, 0) */
+#if LINUX_VERSION_IS_LESS(4, 17, 0)
+
+#define sg_init_marker LINUX_BACKPORT(sg_init_marker)
+/**
+ * sg_init_marker - Initialize markers in sg table
+ * @sgl: The SG table
+ * @nents: Number of entries in table
+ *
+ **/
+static inline void sg_init_marker(struct scatterlist *sgl,
+ unsigned int nents)
+{
+#ifdef CONFIG_DEBUG_SG
+ unsigned int i;
+
+ for (i = 0; i < nents; i++)
+ sgl[i].sg_magic = SG_MAGIC;
+#endif
+ sg_mark_end(&sgl[nents - 1]);
+}
+
+#endif /* LINUX_VERSION_IS_LESS(4, 17, 0) */
+
#endif /* __BACKPORT_SCATTERLIST_H */