Larry Finger 46f401c429 powerpc/pmac: Fix crash in dma-mapping.h with NULL dma_ops ... Commit 5657933dbb ("treewide: Move dma_ops from struct dev_archdata into struct device") introduced a crash for macio devices, an example backtrace being: kernel BUG at ./include/linux/dma-mapping.h:465! Oops: Exception in kernel mode, sig: 5 [#1] ... NIP [c031ddb0] dmam_alloc_coherent+0x74/0x140 LR [c031de70] dmam_alloc_coherent+0x134/0x140 Call Trace: dmam_alloc_coherent+0x134/0x140 (unreliable) pata_macio_port_start+0x3c/0x8c ata_host_start.part.5+0xfc/0x208 ata_host_activate+0x128/0x154 pata_macio_common_init+0x2f0/0x538 pata_macio_attach+0xd8/0x180 macio_device_probe+0x5c/0xec driver_probe_device+0x21c/0x314 __driver_attach+0xcc/0xd0 bus_for_each_dev+0x68/0xb4 bus_add_driver+0x1dc/0x244 driver_register+0x88/0x130 pata_macio_init+0x5c/0x88 do_one_initcall+0x40/0x170 kernel_init_freeable+0x134/0x1d0 kernel_init+0x18/0x110 ret_from_kernel_thread+0x5c/0x64 This was caused by the device having NULL dma_ops, triggering the BUG_ON(). Previously the device inherited its dma_ops via the assignment to dev->ofdev.dev.archdata. However after commit 5657933dbb the dma_ops are moved into dev->ofdev.dev, and so they need to be explicitly copied. Fixes: 5657933dbb ("treewide: Move dma_ops from struct dev_archdata into struct device") Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [mpe: Rewrite change log, add backtrace] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-03-10 14:17:23 +11:00
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ams
adb-iop.c
adb.c
adbhid.c
ans-lcd.c
ans-lcd.h
apm_emu.c
Kconfig
mac_hid.c
macio_asic.c
macio_sysfs.c
macio-adb.c
Makefile
mediabay.c
rack-meter.c
smu.c
therm_adt746x.c
therm_windtunnel.c
via-cuda.c
via-macii.c
via-pmu-backlight.c
via-pmu-event.c
via-pmu-event.h
via-pmu-led.c
via-pmu.c
via-pmu68k.c
windfarm_ad7417_sensor.c
windfarm_core.c
windfarm_cpufreq_clamp.c
windfarm_fcu_controls.c
windfarm_lm75_sensor.c
windfarm_lm87_sensor.c
windfarm_max6690_sensor.c
windfarm_mpu.h
windfarm_pid.c
windfarm_pid.h
windfarm_pm72.c
windfarm_pm81.c
windfarm_pm91.c
windfarm_pm112.c
windfarm_pm121.c
windfarm_rm31.c
windfarm_smu_controls.c
windfarm_smu_sat.c
windfarm_smu_sensors.c
windfarm.h