From: Mario Limonciello <mario.limonciello@amd.com>
Date: Thu, 23 Feb 2023 21:07:42 +0000 (-0600)
Subject: thunderbolt: use `tb_eeprom_get_drom_offset` to discover DROM offset
X-Git-Tag: v6.4-rc1~118^2~45^2~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c8325b3227508459fab42f4f48fb232bc687f1ba;p=thirdparty%2Fkernel%2Flinux.git

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@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---

diff --git a/drivers/thunderbolt/eeprom.c b/drivers/thunderbolt/eeprom.c
index c90d22f56d4e1..3b96a55295a0d 100644
--- a/drivers/thunderbolt/eeprom.c
+++ b/drivers/thunderbolt/eeprom.c
@@ -471,14 +471,13 @@ err:
 
 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;