From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tilman Schmidt Subject: [PATCH 04/12] gigaset: handle isoc frame errors more gracefully Date: Sat, 19 Sep 2009 01:57:43 +0200 (CEST) Message-ID: <20090919-patch-gigaset-04.tilman@imap.cc> References: <20090919-patch-gigaset-00.tilman@imap.cc> Cc: Hansjoerg Lipp , davem@davemloft.net, i4ldeveloper@listserv.isdn4linux.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: Karsten Keil , Karsten Keil Return-path: In-Reply-To: <20090919-patch-gigaset-00.tilman@imap.cc> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Don't drop the remainder of an URB if an isochronous frame has an error. Impact: error handling improvement Signed-off-by: Tilman Schmidt --- drivers/isdn/gigaset/bas-gigaset.c | 18 +++++++----------- 1 files changed, 7 insertions(+), 11 deletions(-) diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c index 781c404..9e7108a 100644 --- a/drivers/isdn/gigaset/bas-gigaset.c +++ b/drivers/isdn/gigaset/bas-gigaset.c @@ -1331,28 +1331,24 @@ static void read_iso_tasklet(unsigned long data) rcvbuf = urb->transfer_buffer; totleft = urb->actual_length; for (frame = 0; totleft > 0 && frame < BAS_NUMFRAMES; frame++) { - if (unlikely(urb->iso_frame_desc[frame].status)) { + numbytes = urb->iso_frame_desc[frame].actual_length; + if (unlikely(urb->iso_frame_desc[frame].status)) dev_warn(cs->dev, - "isochronous read: frame %d: %s\n", - frame, + "isochronous read: frame %d[%d]: %s\n", + frame, numbytes, get_usb_statmsg( urb->iso_frame_desc[frame].status)); - break; - } - numbytes = urb->iso_frame_desc[frame].actual_length; - if (unlikely(numbytes > BAS_MAXFRAME)) { + if (unlikely(numbytes > BAS_MAXFRAME)) dev_warn(cs->dev, "isochronous read: frame %d: " "numbytes (%d) > BAS_MAXFRAME\n", frame, numbytes); - break; - } if (unlikely(numbytes > totleft)) { dev_warn(cs->dev, "isochronous read: frame %d: " "numbytes (%d) > totleft (%d)\n", frame, numbytes, totleft); - break; + numbytes = totleft; } offset = urb->iso_frame_desc[frame].offset; if (unlikely(offset + numbytes > BAS_INBUFSIZE)) { @@ -1361,7 +1357,7 @@ static void read_iso_tasklet(unsigned long data) "offset (%d) + numbytes (%d) " "> BAS_INBUFSIZE\n", frame, offset, numbytes); - break; + numbytes = BAS_INBUFSIZE - offset; } gigaset_isoc_receive(rcvbuf + offset, numbytes, bcs); totleft -= numbytes; -- 1.6.2.1.214.ge986c