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ntb: intel: Fix using link status DB's

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[ Upstream commit 8144e9c8f30fb23bb736a5d24d5c9d46965563c4 ]

Make sure we are not using DB's which were remapped for link status.

Fixes: f6e51c354b ("ntb: intel: split out the gen3 code")
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Nikita Shubin
2024-06-06 11:15:19 +03:00
committed by Greg Kroah-Hartman
parent c61a3f2df1
commit 830169a5ce
1 changed files with 3 additions and 0 deletions
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3
drivers/ntb/hw/intel/ntb_hw_gen3.c
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@@ -215,6 +215,9 @@ static int gen3_init_ntb(struct intel_ntb_dev *ndev)
}
ndev->db_valid_mask = BIT_ULL(ndev->db_count) - 1;
/* Make sure we are not using DB's used for link status */
if (ndev->hwerr_flags & NTB_HWERR_MSIX_VECTOR32_BAD)
ndev->db_valid_mask &= ~ndev->db_link_mask;
ndev->reg->db_iowrite(ndev->db_valid_mask,
ndev->self_mmio +