USB: ehci-mxc: bail out on transceiver problems
The old code registered the hcd even if there were no transceivers
detected, leading to oopses like this if we try to probe a non-existant
ULPI:
[ 2.730000] mxc-ehci mxc-ehci.0: unable to init transceiver
[ 2.740000] timeout polling for ULPI device
[ 2.740000] timeout polling for ULPI device
[ 2.750000] mxc-ehci mxc-ehci.0: unable to enable vbus on transceiver
[ 2.750000] mxc-ehci mxc-ehci.0: Freescale On-Chip EHCI Host Controller
[ 2.760000] mxc-ehci mxc-ehci.0: new USB bus registered, assigned bus number 2
[ 2.770000] Unhandled fault: external abort on non-linefetch (0x808) at 0xc4876184
[ 2.770000] Internal error: : 808 [#1] PREEMPT
[ 2.770000] last sysfs file:
[ 2.770000] Modules linked in:
[ 2.770000] CPU: 0 Not tainted (2.6.33.5 #5)
[ 2.770000] PC is at ehci_hub_control+0x4d4/0x8f8
[ 2.770000] LR is at ehci_mxc_setup+0xbc/0xdc
[ 2.770000] pc : [<c0196dfc>] lr : [<c019bc8c>] psr: 00000093
[ 2.770000] sp : c3815e40 ip : 00000001 fp : 60000013
[ 2.770000] r10: c4876184 r9 : 00000000 r8 : c3814000
[ 2.770000] r7 : c391d2cc r6 : 00000001 r5 : 00000001 r4 : 00000000
[ 2.770000] r3 : 80000000 r2 : 00000007 r1 : 80000000 r0 : c4876184
[ 2.770000] Flags: nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 2.770000] Control: 0005317f Table: a0004000 DAC: 00000017
[ 2.770000] Process swapper (pid: 1, stack limit = 0xc3814270)
...
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable <stable@kernel.org>
Acked-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1 file changed