disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/net/ethernet/mellanox/mlxsw/i2c.c
..
..
@@ -47,6 +47,7 @@
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 #define MLXSW_I2C_MBOX_SIZE_BITS	12
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 #define MLXSW_I2C_ADDR_BUF_SIZE		4
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 #define MLXSW_I2C_BLK_DEF		32
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+#define MLXSW_I2C_BLK_MAX		100
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 #define MLXSW_I2C_RETRY			5
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 #define MLXSW_I2C_TIMEOUT_MSECS		5000
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 #define MLXSW_I2C_MAX_DATA_SIZE		256
..
..
@@ -428,7 +429,7 @@
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 	} else {
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 		/* No input mailbox is case of initialization query command. */
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 		reg_size = MLXSW_I2C_MAX_DATA_SIZE;
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-		num = reg_size / mlxsw_i2c->block_size;
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+		num = DIV_ROUND_UP(reg_size, mlxsw_i2c->block_size);
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 		if (mutex_lock_interruptible(&mlxsw_i2c->cmd.lock) < 0) {
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 			dev_err(&client->dev, "Could not acquire lock");
..
..
@@ -576,7 +577,7 @@
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 			return -EOPNOTSUPP;
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 		}
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-		mlxsw_i2c->block_size = max_t(u16, MLXSW_I2C_BLK_DEF,
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+		mlxsw_i2c->block_size = min_t(u16, MLXSW_I2C_BLK_MAX,
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 					      min_t(u16, quirks->max_read_len,
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 						    quirks->max_write_len));
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 	} else {