[PATCH 2/2] thunderbolt: use `tb_eeprom_get_drom_offset` to discover DROM offset

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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@xxxxxxx>
---
 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 d9d9567bb938b..82124e9db755c 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;
 
-- 
2.25.1




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