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authorJohan Hovold <johan@kernel.org>2017-05-10 18:18:29 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-26 07:13:09 +0200
commitec443ee0c2aa3c1748de683bcda3714bb4d37010 (patch)
tree7a91eb061be3bf6cb4d95e39bc8833291d21f457 /include/uapi
parent7e2ad8b207f23a28cd3af7f0661fc1141c5a2375 (diff)
USB: hub: fix SS max number of ports
commit 93491ced3c87c94b12220dbac0527e1356702179 upstream. Add define for the maximum number of ports on a SuperSpeed hub as per USB 3.1 spec Table 10-5, and use it when verifying the retrieved hub descriptor. This specifically avoids benign attempts to update the DeviceRemovable mask for non-existing ports (should we get that far). Fixes: dbe79bbe9dcb ("USB 3.0 Hub Changes") Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/linux/usb/ch11.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/ch11.h b/include/uapi/linux/usb/ch11.h
index 331499d597fa..9ce10d4a0245 100644
--- a/include/uapi/linux/usb/ch11.h
+++ b/include/uapi/linux/usb/ch11.h
@@ -22,6 +22,9 @@
*/
#define USB_MAXCHILDREN 31
+/* See USB 3.1 spec Table 10-5 */
+#define USB_SS_MAXPORTS 15
+
/*
* Hub request types
*/