usbnet: ipheth: remove extraneous rx URB length check

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[ Upstream commit 655b46d7a3 ]

Rx URB length was already checked in ipheth_rcvbulk_callback_legacy()
and ipheth_rcvbulk_callback_ncm(), depending on the current mode.
The check in ipheth_rcvbulk_callback() was thus mostly a duplicate.

The only place in ipheth_rcvbulk_callback() where we care about the URB
length is for the initial control frame. These frames are always 4 bytes
long. This has been checked as far back as iOS 4.2.1 on iPhone 3G.

Remove the extraneous URB length check. For control frames, check for
the specific 4-byte length instead.

Signed-off-by: Foster Snowhill <forst@pen.gy>
Tested-by: Georgi Valkov <gvalkov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Foster Snowhill 2024-08-06 19:28:06 +02:00 • committed by Greg Kroah-Hartman

parent 78bce66914

commit c2fb33a7fe

1 changed files with 2 additions and 6 deletions

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drivers/net/usb/ipheth.c

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