From e157f561e1c1bcf61768b5a57195539d2d549e46 Mon Sep 17 00:00:00 2001 From: Thomas Pugliese Date: Wed, 23 Oct 2013 14:44:29 -0500 Subject: usb: wusbcore: change WA_SEGS_MAX to a legal value commit f74b75e7f920c700636cccca669c7d16d12e9202 upstream. change WA_SEGS_MAX to a number that is legal according to the WUSB spec. Signed-off-by: Thomas Pugliese [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings Cc: Yang Yingliang Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/wa-xfer.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 57c01ab09ad8..5f6df6ee6ab6 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -90,7 +90,8 @@ #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 { @@ -444,7 +445,7 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer, xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize; xfer->segs = (urb->transfer_buffer_length + xfer->seg_size - 1) / xfer->seg_size; - if (xfer->segs >= WA_SEGS_MAX) { + if (xfer->segs > WA_SEGS_MAX) { dev_err(dev, "BUG? ops, number of segments %d bigger than %d\n", (int)(urb->transfer_buffer_length / xfer->seg_size), WA_SEGS_MAX); -- cgit v1.2.3