USB: serial: ftdi_sio: fix latency-timer error handling

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commit e3e574ad85 upstream.

Make sure to detect short responses when reading the latency timer to
avoid using stale buffer data.

Note that no heap data would currently leak through sysfs as
ASYNC_LOW_LATENCY is set by default.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2017-01-12 14:56:12 +01:00 • committed by Greg Kroah-Hartman

parent ca4e6525df

commit 594c9b4b0a

1 changed files with 5 additions and 2 deletions

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drivers/usb/serial/ftdi_sio.c

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