Modifying the Maximum Read Request Size to 0 (value of 128Bytes) has
massive negative ramifications on some devices.  Without knowing which
devices have this issue, do not modify from the default value when
walking the PCI-E bus in pcie_bus_safe mode.  Also, make pcie_bus_safe
the default procedure.
Tested-by: NSven Schnelle <svens@stackframe.org>
Tested-by: NSimon Kirby <sim@hostway.ca>
Tested-by: NStephen M. Cameron <scameron@beardog.cce.hp.com>
Reported-and-tested-by: NEric Dumazet <eric.dumazet@gmail.com>
Reported-and-tested-by: NNiels Ole Salscheider <niels_ole@salscheider-online.de>
References: https://bugzilla.kernel.org/show_bug.cgi?id=42162Signed-off-by: NJon Mason <mason@myri.com>
Acked-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>