Ben Crocker 9c1192dcb7 drm/radeon: insist on 32-bit DMA for Cedar on PPC64/PPC64LE ...

commit 2c83029cda upstream.

In radeon_device_init, set the need_dma32 flag for Cedar chips
(e.g. FirePro 2270).  This fixes, or at least works around, a bug
on PowerPC exposed by last year's commits

8e3f1b1d82 (Russell Currey)

and

253fd51e2f (Alistair Popple)

which enabled the 64-bit DMA iommu bypass.

This caused the device to freeze, in some cases unrecoverably, and is
the subject of several bug reports internal to Red Hat.

Signed-off-by: Ben Crocker <bcrocker@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-03-15 10:54:30 +01:00

..

drm

drm/radeon: insist on 32-bit DMA for Cedar on PPC64/PPC64LE

2018-03-15 10:54:30 +01:00

host1x

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ipu-v3

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

vga

sched/wait: Rename wait_queue_t => wait_queue_entry_t

2017-06-20 12:18:27 +02:00

Makefile

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