[PATCH v4 2/3] thunderbolt: use `tb_eeprom_get_drom_offset` to discover DROM offset

From: Mario Limonciello
Date: Thu Feb 23 2023 - 16:08:23 EST


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 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