[PATCH 1/3] board: ti: common: Optimize boot when detecting consecutive bad records

[Nishanth Menon]

The eeprom data area is much bigger than the data we intend to store,
however, with bad programming, we might end up reading bad records over
and over till we run out of eeprom space. instead just exit when 10
consecutive records are read.

Signed-off-by: Nishanth Menon <nm at ti.com>
---
 board/ti/common/board_detect.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index de92eb0981f9..381cddc00ad1 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -434,6 +434,7 @@ int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 	struct ti_am6_eeprom_record_board_id board_id;
 	struct ti_am6_eeprom_record record;
 	int rc;
+	int consecutive_bad_records = 0;
 
 	/* Initialize with a known bad marker for i2c fails.. */
 	memset(ep, 0, sizeof(*ep));
@@ -470,7 +471,7 @@ int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 	 */
 	eeprom_addr = sizeof(board_id);
 
-	while (true) {
+	while (consecutive_bad_records < 10) {
 		rc = dm_i2c_read(dev, eeprom_addr, (uint8_t *)&record.header,
 				 sizeof(record.header));
 		if (rc)
@@ -506,6 +507,7 @@ int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 				pr_err("%s: EEPROM parsing error!\n", __func__);
 				return rc;
 			}
+			consecutive_bad_records = 0;
 		} else {
 			/*
 			 * We may get here in case of larger records which
@@ -513,6 +515,7 @@ int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 			 */
 			pr_err("%s: Ignoring record id %u\n", __func__,
 			       record.header.id);
+			consecutive_bad_records++;
 		}
 
 		eeprom_addr += record.header.len;
-- 
2.31.1