add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/net/phy/sfp.c
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@@ -207,6 +207,12 @@
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  */
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 #define SFP_PHY_ADDR	22
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+/* SFP_EEPROM_BLOCK_SIZE is the size of data chunk to read the EEPROM
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+ * at a time. Some SFP modules and also some Linux I2C drivers do not like
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+ * reads longer than 16 bytes.
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+ */
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+#define SFP_EEPROM_BLOCK_SIZE	16
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+
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 struct sff_data {
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 	unsigned int gpios;
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 	bool (*module_supported)(const struct sfp_eeprom_id *id);
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@@ -1754,11 +1760,7 @@
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 	u8 check;
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 	int ret;
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-	/* Some SFP modules and also some Linux I2C drivers do not like reads
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-	 * longer than 16 bytes, so read the EEPROM in chunks of 16 bytes at
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-	 * a time.
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-	 */
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-	sfp->i2c_block_size = 16;
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+	sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE;
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 	ret = sfp_read(sfp, false, 0, &id.base, sizeof(id.base));
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 	if (ret < 0) {
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@@ -2385,6 +2387,7 @@
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 		return ERR_PTR(-ENOMEM);
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 	sfp->dev = dev;
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+	sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE;
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 	mutex_init(&sfp->sm_mutex);
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 	mutex_init(&sfp->st_mutex);