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| author | Ivan Mikhaylov <ivan@de.ibm.com> | 2017-05-19 18:47:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:50:14 +0200 |
| commit | 6c9fe4770b1ae81e182114358184e370e1d78dd4 (patch) | |
| tree | e9cc5f9a42a324ca219bdeb72a61be4333fcdb3d /tools/perf/scripts/python | |
| parent | d88cbbe7ba0c9d75846d82e0ad6d7d82ef246e31 (diff) | |
powerpc/[booke|4xx]: Don't clobber TCR[WP] when setting TCR[DIE]
[ Upstream commit 6e2f03e292ef46eed2b31b0a344a91d514f9cd81 ]
Prevent a kernel panic caused by unintentionally clearing TCR watchdog
bits. At this point in the kernel boot, the watchdog may have already
been enabled by u-boot. The original code's attempt to write to the TCR
register results in an inadvertent clearing of the watchdog
configuration bits, causing the 476 to reset.
Signed-off-by: Ivan Mikhaylov <ivan@de.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions