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authorChuanhong Guo <gch981213@gmail.com>2020-02-09 23:05:04 +0800
committerChuanhong Guo <gch981213@gmail.com>2020-02-10 11:59:20 +0800
commit9c19c35d1ee3af7dc4f173871ab774d8d30a4e18 (patch)
tree4dba41a60dc548c1e2c4b92502ad1efa4b8617c0 /target/linux/ath79/patches-4.19/0029-MIPS-ath79-drop-legacy-pci-code.patch
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ath79: restore pin state on probe for ar934x-spi
If bootloader doesn't terminate its last spi operation properly before starting kernel, our first transfer in kernel becomes a continuous transfer to that request instead of a new one. Fix this flaw by restoring IOC register, which restored all pin state to default. Fixes: ebf0d8dade ("ath79: add new ar934x spi driver") Reported-by: Russell Senior <russell@personaltelco.net> Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
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