This bug was fixed in the package linux - 3.15.0-1.5
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linux (3.15.0-1.5) utopic; urgency=low
[ Tim Gardner ]
* [Config] Add apm-mustang.dtb to kernel-image udeb
-- Tim Gardner <tim.gard...@canonical.com> Mon, 19 May 2014 14:47:42 -0700
** Changed in: linux (Ubuntu Utopic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1311738
Title:
Disable PAMU on Freescale kernels
Status in “linux” package in Ubuntu:
Fix Released
Status in “linux” source package in Trusty:
Fix Committed
Status in “linux” source package in Utopic:
Fix Released
Bug description:
In Saucy/v3.11 kernel, we used the PAMU SAUCE patch from Freescale.
The current upstreamed PAMU code appears to break fsl-ehci by
restricting proper access to memory locations associated with it.
PAMU is an IOMMU extension that protects and prevents access to
portions of memory that are known to be reserved for hardware use.
This extension is not needed for normal runtime, so rather than allow
broken EHCI, let's disbale this until PAMU can be fixed.
This only affects Freescale PowerPC kernel variations.
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