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authorDave Jiang <dave.jiang@intel.com>2017-06-08 12:46:45 -0700
committerJon Mason <jdmason@kudzu.us>2017-06-19 14:24:41 -0400
commit5eb449e15d2396785a8eb15baf42cea33db9ae13 (patch)
treec53b7f7cfc01475bfe661fa718df936dca5f4278 /drivers/ntb
parent8e8496e0e9564b66165f5219a4e8ed20b0d3fc6b (diff)
downloadlinux-5eb449e15d2396785a8eb15baf42cea33db9ae13.tar.bz2
ntb: ntb_hw_intel: Skylake doorbells should be 32bits, not 64bits
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>
Diffstat (limited to 'drivers/ntb')
-rw-r--r--drivers/ntb/hw/intel/ntb_hw_intel.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.c b/drivers/ntb/hw/intel/ntb_hw_intel.c
index c00238491673..7b3b6fd63d7d 100644
--- a/drivers/ntb/hw/intel/ntb_hw_intel.c
+++ b/drivers/ntb/hw/intel/ntb_hw_intel.c
@@ -2878,7 +2878,7 @@ static const struct intel_ntb_reg skx_reg = {
.link_is_up = xeon_link_is_up,
.db_ioread = skx_db_ioread,
.db_iowrite = skx_db_iowrite,
- .db_size = sizeof(u64),
+ .db_size = sizeof(u32),
.ntb_ctl = SKX_NTBCNTL_OFFSET,
.mw_bar = {2, 4},
};