From 747125db6dcd8bcc21f13d013f6e6a2acade21ee Mon Sep 17 00:00:00 2001
From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Mon, 16 Sep 2019 17:03:03 +0300
Subject: [PATCH] thunderbolt: Drop unnecessary read when writing LC command in Ice Lake
Git-commit: 747125db6dcd8bcc21f13d013f6e6a2acade21ee
Patch-mainline: v5.4-rc7
References: git-fixes
The read is not needed as we overwrite the returned value in the next
line anyway so drop it.
Fixes: 3cdb9446a117 ("thunderbolt: Add support for Intel Ice Lake")
Reported-by: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/thunderbolt/nhi_ops.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/thunderbolt/nhi_ops.c b/drivers/thunderbolt/nhi_ops.c
index 61cd09cef943..6795851aac95 100644
--- a/drivers/thunderbolt/nhi_ops.c
+++ b/drivers/thunderbolt/nhi_ops.c
@@ -80,7 +80,6 @@ static void icl_nhi_lc_mailbox_cmd(struct tb_nhi *nhi, enum icl_lc_mailbox_cmd c
{
u32 data;
- pci_read_config_dword(nhi->pdev, VS_CAP_19, &data);
data = (cmd << VS_CAP_19_CMD_SHIFT) & VS_CAP_19_CMD_MASK;
pci_write_config_dword(nhi->pdev, VS_CAP_19, data | VS_CAP_19_VALID);
}
--
2.16.4