Revert "i2c: designware: detect when dynamic tar update is possible"
commit 12688dc2 upstream. This reverts commit 63d0f0a6. It caused a regression on platforms where I2C controller is synthesized with dynamic TAR update disabled. Detection code is testing is bit DW_IC_CON_10BITADDR_MASTER in register DW_IC_CON read-only but fails to restore original value in case bit is read-write. Instead of fixing this we revert the commit since it was preparation for the commit 0317e6c0 ("i2c: designware: do not disable adapter after transfer") which was also reverted. Reported-by: Shah Nehal-Bakulchandra <Nehal-bakulchandra.Shah@amd.com> Reported-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Acked-By: Lucas De Marchi <lucas.demarchi@intel.com> Fixes: 63d0f0a6 ("i2c: designware: detect when dynamic tar update is possible") Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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