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It seems to make more sense to avoid calling unpopulate on already unpopulated TTMs than to add checks to all the implementations.
Signed-off-by: Ben Skeggs drm/radeon: fix LCD record parsing commit 95663948ba22a4be8b99acd67fbf83e86ddffba4 upstream.
The zeroplus HID driver was not checking the size of allocated values in fields it used.
A HID device could send a malicious output report that would cause the driver to write beyond the output report allocation during initialization, causing a heap overflow: [ 1442.728680] usb 1-1: New USB device found, id Vendor=0c12, id Product=0005 ...
On nouveau, the first issue to be hit because of this is that dma_address may be a NULL pointer.
If we pass fd of memory.usage_in_bytes of cgroup A to cgroup.event_control of cgroup B, then we won't get memory usage notification from A but B!
We need to allocate line buffer to each display when setting up the watermarks. This fixes blank screen problems on dce4.1/5 asics. id=64850 Based on an initial fix from: Jay Cornwall drm/radeon: fix resume on some rs4xx boards (v2) commit acf88deb8ddbb73acd1c3fa32fde51af9153227f upstream. GART_INDEX_REG_EN causes hangs on some boards on resume.
Based on an initial fix from: Jay Cornwall drm/radeon: update line buffer allocation for dce6 commit 290d24576ccf1aa0373d2185cedfe262d0d4952a upstream. The systems seem to work fine without touching this bit so leave it as is. I suspect the problem is that we are losing the other settings in the register. id=52952 Reported-by: Ondrej Zary drm/radeon: fix handling of variable sized arrays for router objects commit fb93df1c2d8b3b1fb16d6ee9e32554e0c038815d upstream.
If the LCD table contains an EDID record, properly account for the edid size when walking through the records.
This should fix error messages about unknown LCD records.
This worked previously because the OUTPUT_ENABLE action is always called immediately after the ENABLE action so the data_offset remained set.