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5eb449e15d
Fixing doorbell register length to 32bits per spec. On Skylake NTB, the doorbell registers are 32bit write only registers. The source for the doorbell is a 64bit register that shows the interrupt bits. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Fixes: 783dfa6cc41b ("ntb: Adding Skylake Xeon NTB support") Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>