[PATCH v3] board: ti: common: board_detect: Fix EEPROM offset read for 1-byte

[Prasanth Babu Mantena]

EEPROM detection logic in ti_i2c_eeprom_get() involves reading
the total size and the 1-byte size with an offset 1. The commit
9f393a2d7af8 ("board: ti: common: board_detect: Fix EEPROM read
quirk for 2-byte") that attempts to fix this uses a wrong pointer to
compare.

The value with one offset is read into offset_test, but the pointer
used to match was still ep, resulting in an invalid comparison of the
values. The intent is to identify bad 2-byte addressing eeproms that
get stuck on the successive reads.

Fixes: 9f393a2d7af8 (board: ti: common: board_detect: Fix EEPROM read quirk for 2-byte)
Signed-off-by: Prasanth Babu Mantena <p-mantena at ti.com>
Tested-by: Matwey V. Kornilov <matwey.kornilov at gmail.com>
---
v3 <--> v2:
Improved and concise commit description.

v2 <--> v1:
Fix inplace for the else condition of CONFIG_IS_ENABLED(DM_I2C).
Improved commit message.

 board/ti/common/board_detect.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index 9a53884c98..869f7a47f8 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -128,7 +128,7 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 
 	rc = dm_i2c_read(dev, 0x1, &offset_test, sizeof(offset_test));
 
-	if (*((u32 *)ep) != (header & 0xFF))
+	if (offset_test != ((header >> 8) & 0xFF))
 		one_byte_addressing = false;
 
 	/* Corrupted data??? */
@@ -180,7 +180,7 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 
 	rc = i2c_read(dev_addr, 0x1, byte, &offset_test, sizeof(offset_test));
 
-	if (*((u32 *)ep) != (header & 0xFF))
+	if (offset_test != ((header >> 8) & 0xFF))
 		one_byte_addressing = false;
 
 	/* Corrupted data??? */
-- 
2.39.0