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/openbmc/linux/arch/powerpc/kernel/
H A Dtime.cdiff 6e2f03e292ef46eed2b31b0a344a91d514f9cd81 Fri May 19 10:47:05 CDT 2017 Ivan Mikhaylov <ivan@de.ibm.com> powerpc/[booke|4xx]: Don't clobber TCR[WP] when setting TCR[DIE]

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>