The patch below does not apply to the 3.12-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From f74b75e7f920c700636cccca669c7d16d12e9202 Mon Sep 17 00:00:00 2001
From: Thomas Pugliese <thomas.pugliese@xxxxxxxxx>
Date: Wed, 23 Oct 2013 14:44:29 -0500
Subject: [PATCH] usb: wusbcore: change WA_SEGS_MAX to a legal value
change WA_SEGS_MAX to a number that is legal according to the WUSB
spec.
Signed-off-by: Thomas Pugliese <thomas.pugliese@xxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index 090ac308..ed5abe87 100644
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -91,7 +91,8 @@
#include "wusbhc.h"
enum {
- WA_SEGS_MAX = 255,
+ /* [WUSB] section 8.3.3 allocates 7 bits for the segment index. */
+ WA_SEGS_MAX = 128,
};
enum wa_seg_status {
@@ -588,7 +589,7 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer,
xfer->segs = 1;
}
- if (xfer->segs >= WA_SEGS_MAX) {
+ if (xfer->segs > WA_SEGS_MAX) {
dev_err(dev, "BUG? oops, number of segments %zu bigger than %d\n",
(urb->transfer_buffer_length/xfer->seg_size),
WA_SEGS_MAX);
--
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