Hello,
the mail address in the MAINTAINERS file is not correct, so I send the
patch again.
I hope it finds the way in the official kernel sources.
--
Kind regards,
Frank Hoffmann
Thesycon GmbH
On 06.09.2012 14:35, Frank Hoffmann wrote:
Hello,
we developing CDC/NCM firmware and found that the Linux CDC/NCM is not
compliant to the USB CDC/NCM specification. The cause is a Bug in the
cdc_ncm.c file.
The structure usb_cdc_ncm_ndp_input_size is only allocated but not
initialized. The CDC/NCM specification section "6.2.7 SetNtbInputSize"
says that the dwNtbInMaxSize field must be at least 2048. But the
current implementation leave it 0, because it is not initialized.
--- linux-3.6-rc4.orig/drivers/net/usb/cdc_ncm.c 2012-09-06
14:05:26.981402153 +0200
+++ linux-3.6-rc4/drivers/net/usb/cdc_ncm.c 2012-09-06
14:11:57.137398615 +0200
@@ -224,6 +224,7 @@
err = -ENOMEM;
goto size_err;
}
+ ndp_in_sz->dwNtbInMaxSize = cpu_to_le32(ctx->rx_max);
err = usb_control_msg(ctx->udev,
usb_sndctrlpipe(ctx->udev, 0),
--
Kind regards,
Frank Hoffmann
Thesycon GmbH
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