1 files changed, 17 insertions, 0 deletions
diff --git a/backport/compat/backport-3.10.c b/backport/compat/backport-3.10.c
index 980ed59d..b1550922 100644
--- a/backport/compat/backport-3.10.c
+++ b/backport/compat/backport-3.10.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/err.h>
 #include <linux/proc_fs.h>
+#include <linux/hid.h>
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 #include <linux/init.h>
@@ -77,3 +78,19 @@ void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid)
 	de->gid = gid;
 }
 EXPORT_SYMBOL_GPL(proc_set_user);
+
+/*
+ * Allocator for buffer that is going to be passed to hid_output_report()
+ */
+u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
+{
+	/*
+	 * 7 extra bytes are necessary to achieve proper functionality
+	 * of implement() working on 8 byte chunks
+	 */
+
+	int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
+
+	return kmalloc(len, flags);
+}
+EXPORT_SYMBOL_GPL(hid_alloc_report_buf);