linux-kernel - [PATCH v4 2/3] thunderbolt: use `tb_eeprom_get_drom

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Date:   Thu, 23 Feb 2023 15:07:42 -0600
From:   Mario Limonciello <mario.limonciello@....com>
To:     <mika.westerberg@...ux.intel.com>,
        Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        "Yehezkel Bernat" <YehezkelShB@...il.com>
CC:     <Sanju.Mehta@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v4 2/3] thunderbolt: use `tb_eeprom_get_drom_offset` to discover DROM offset

The static function `tb_eeprom_get_drom_offset` has more safety guards
for the DROM offset fetching.  Use this instead of just `tb_sw_read`

No intended functional changes.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
 drivers/thunderbolt/eeprom.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/thunderbolt/eeprom.c b/drivers/thunderbolt/eeprom.c
index 8c9e553e2fca..873fa4300507 100644
--- a/drivers/thunderbolt/eeprom.c
+++ b/drivers/thunderbolt/eeprom.c
@@ -471,14 +471,13 @@ static int tb_drom_copy_efi(struct tb_switch *sw, u16 *size)
 
 static int tb_drom_copy_nvm(struct tb_switch *sw, u16 *size)
 {
-	u32 drom_offset;
+	u16 drom_offset;
 	int ret;
 
 	if (!sw->dma_port)
 		return -ENODEV;
 
-	ret = tb_sw_read(sw, &drom_offset, TB_CFG_SWITCH,
-			 sw->cap_plug_events + 12, 1);
+	ret = tb_eeprom_get_drom_offset(sw, &drom_offset);
 	if (ret)
 		return ret;
 
-- 
2.34.1