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Read back the reset register in order to flush the cache. This fixes spurious reboot hangs on TP-Link TL-WDR3600 and TL-WDR4300 with Zentel DRAM chips. This issue was fixed in the past, but switching to the reset-driver specific implementation removed the cache barrier which was previously implicitly added by reading back the register in question. Link: freifunk-gluon/gluon#2904 Link: openwrt#13043 Link: https://dev.archive.openwrt.org/ticket/17839 Link: f8a7bfe1cb2c ("MIPS: ath79: fix system restart") Signed-off-by: David Bauer <mail@david-bauer.net>
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