fix driver optoe twoaddr a2h read write bug

patch/0001-fix-driver-optoe-twoaddr-a2h-read-write-bug.patch

@@ -0,0 +1,78 @@
+From 4338f175d03e83b3dd187c4d2af193e9e6f86039 Mon Sep 17 00:00:00 2001
+From: "Song,Qinghua" <[email protected]>
+Date: Fri, 20 Sep 2024 19:32:52 +0800
+Subject: [PATCH] fix driver optoe twoaddr a2h read/write bug
+
+---
+ drivers/misc/eeprom/optoe.c | 29 ++++++++++++++++++++++++++---
+ 1 file changed, 26 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/misc/eeprom/optoe.c b/drivers/misc/eeprom/optoe.c
+index 16287fdc5..c6fdce9c9 100644
+--- a/drivers/misc/eeprom/optoe.c
++++ b/drivers/misc/eeprom/optoe.c
+@@ -284,7 +284,6 @@ static uint8_t optoe_translate_offset(struct optoe_data *optoe,
+ 	if (optoe->dev_class == TWO_ADDR) {
+ 		if (*offset > 255) {
+ 			/* like QSFP, but shifted to client[1] */
+-			*client = optoe->client[1];
+ 			*offset -= 256;
+ 		}
+ 	}
+@@ -304,6 +303,27 @@ static uint8_t optoe_translate_offset(struct optoe_data *optoe,
+
+ 	return page;  /* note also returning client and offset */
+ }
++static void optoe_update_client(struct optoe_data *optoe, loff_t *offset, struct i2c_client **client)
++{
++    /* if SFP style, offset > 255, shift to i2c addr 0x51 */
++    if (optoe->dev_class == TWO_ADDR) {
++        if (*offset > 255) {
++            *client = optoe->client[1];
++        } else {
++            *client = optoe->client[0];
++        }
++    }
++
++    return;
++}
++
++static void optoe_reset_client(struct optoe_data *optoe, loff_t *offset, struct i2c_client **client)
++{
++    *client = optoe->client[0];
++
++    return;
++}
++
+
+ static ssize_t optoe_eeprom_read(struct optoe_data *optoe,
+ 		    struct i2c_client *client,
+@@ -523,12 +543,14 @@ static ssize_t optoe_eeprom_update_client(struct optoe_data *optoe,
+ 		ret = optoe_eeprom_write(optoe, client, &page,
+ 			OPTOE_PAGE_SELECT_REG, 1);
+ 		if (ret < 0) {
+-			dev_dbg(&client->dev,
++			dev_err(&client->dev,
+ 				"Write page register for page %d failed ret:%d!\n",
+ 					page, ret);
+ 			return ret;
+ 		}
+ 	}
++        
++	optoe_update_client(optoe, &off, &client);
+
+ 	while (count) {
+ 		ssize_t	status;
+@@ -551,7 +573,8 @@ static ssize_t optoe_eeprom_update_client(struct optoe_data *optoe,
+ 		retval += status;
+ 	}
+
+-
++        optoe_reset_client(optoe, &off, &client);
++       
+ 	if (page > 0) {
+ 		/* return the page register to page 0 (why?) */
+ 		page = 0;
+-- 
+2.25.1
+

patch/series

@@ -107,6 +107,9 @@ cisco-npu-disable-other-bars.patch
 #
 # Marvell platform patches for 4.19
 armhf_secondary_boot_online.patch
+
+# Micas patches
+0001-fix-driver-optoe-twoaddr-a2h-read-write-bug.patch
 ############################################################
 #
 # Internal patches will be added below (placeholder)