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ce9afe08e7
linux_dsm_epyc7002/arch/powerpc
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Gautham R. Shenoy ce9afe08e7 powerpc/pseries/energy: Use OF accessor functions to read ibm,drc-indexes 
In cpu_to_drc_index() in the case when FW_FEATURE_DRC_INFO is absent,
we currently use of_read_property() to obtain the pointer to the array
corresponding to the property "ibm,drc-indexes". The elements of this
array are of type __be32, but are accessed without any conversion to
the OS-endianness, which is buggy on a Little Endian OS.

Fix this by using of_property_read_u32_index() accessor function to
safely read the elements of the array.

Fixes: e83636ac33 ("pseries/drc-info: Search DRC properties for CPU indexes")
Cc: stable@vger.kernel.org # v4.16+
Reported-by: Pavithra R. Prakash <pavrampu@in.ibm.com>
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
[mpe: Make the WARN_ON a WARN_ON_ONCE so it's not retriggerable]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-03-27 10:40:09 +11:00
..
boot Kbuild updates for v5.1 2019-03-10 17:48:21 -07:00
configs powerpc fixes for 5.1 #2 2019-03-16 10:45:17 -07:00
crypto
include powerpc/mm: Only define MAX_PHYSMEM_BITS in SPARSEMEM configurations 2019-03-21 00:16:45 +11:00
kernel powerpc/security: Fix spectre_v2 reporting 2019-03-21 21:09:03 +11:00
kvm ARM: some cleanups, direct physical timer assignment, cache sanitization 2019-03-15 15:00:28 -07:00
lib powerpc/64: Fix memcmp reading past the end of src/dest 2019-03-25 23:33:26 +11:00
math-emu powerpc: math-emu: remove unneeded header search paths 2019-01-14 20:39:27 +11:00
mm powerpc/6xx: fix setup and use of SPRN_SPRG_PGDIR for hash32 2019-03-19 00:30:19 +11:00
net powerpc updates for 5.1 2019-03-07 12:56:26 -08:00
oprofile
perf powerpc updates for 5.1 2019-03-07 12:56:26 -08:00
platforms powerpc/pseries/energy: Use OF accessor functions to read ibm,drc-indexes 2019-03-27 10:40:09 +11:00
purgatory
sysdev treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
tools
xmon powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc 2019-02-26 23:55:22 +11:00
Kbuild
Kconfig DMA mapping updates for 5.1 2019-03-10 11:54:48 -07:00
Kconfig.debug powerpc: Move page table dump files in a dedicated subdirectory 2019-02-22 22:29:22 +11:00
Makefile powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU 2019-02-23 22:31:40 +11:00
Makefile.postlink